diff --git a/Cargo.toml b/Cargo.toml
index ad5496b..291a7b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [workspace]
 resolver = "2"
 
-members = ["ecs", "scene_update_macros"]
+members = ["ecs", "update_macros"]
 
 [workspace.dependencies]
 anyhow = { version = "1.0.86", features = ["backtrace"] }
diff --git a/ecs/Cargo.toml b/ecs/Cargo.toml
index 2e54ab9..2901052 100644
--- a/ecs/Cargo.toml
+++ b/ecs/Cargo.toml
@@ -12,7 +12,7 @@ paste.workspace = true
 ron.workspace = true
 utilities.workspace = true
 
-scene_update_macros = { path = "../scene_update_macros" }
+update_macros = { path = "../update_macros" }
 
 [features]
 timings = []
diff --git a/ecs/src/entity.rs b/ecs/src/entity.rs
index fdfdc35..f53dc33 100644
--- a/ecs/src/entity.rs
+++ b/ecs/src/entity.rs
@@ -7,7 +7,7 @@ use anyhow::Result;
 use indexmap::IndexMap;
 use serde::{Deserialize, Serialize};
 
-use crate::{ComponentDebug, ComponentNotFoundError, EntityComponent, MultiMut, TypeMap};
+use crate::{ComponentDebug, ComponentNotFoundError, EntityComponent, TypeMap};
 
 #[derive(Debug)]
 pub struct EntityNotFoundError {
@@ -89,10 +89,6 @@ impl EntityObject {
         self.gltf_file.as_ref()
     }
 
-    pub fn multi_mut(&mut self) -> MultiMut<'_> {
-        self.components.multi_mut()
-    }
-
     pub fn insert_component<T: EntityComponent + ComponentDebug>(
         &mut self,
         component: T,
diff --git a/ecs/src/lib.rs b/ecs/src/lib.rs
index b74be15..8708cc1 100644
--- a/ecs/src/lib.rs
+++ b/ecs/src/lib.rs
@@ -9,9 +9,9 @@ mod world;
 
 pub use crate::entity::{Entity, EntityMultiMut, EntityNotFoundError, EntityObject};
 pub use crate::events::Events;
-pub use crate::resources::{ResourceMultiMut, Resources};
+pub use crate::resources::Resources;
 pub use crate::type_map::{
-    ComponentCreateInfo, ComponentDebug, ComponentNotFoundError, EntityComponent, MultiMut, TypeMap,
+    ComponentCreateInfo, ComponentDebug, ComponentNotFoundError, EntityComponent, TypeMap,
 };
 pub use crate::unsafe_component_store::UnsafeComponentStore;
 pub use crate::updates::*;
diff --git a/ecs/src/resources.rs b/ecs/src/resources.rs
index 44fbd15..1f7f662 100644
--- a/ecs/src/resources.rs
+++ b/ecs/src/resources.rs
@@ -1,7 +1,6 @@
 use std::{
     any::{Any, TypeId},
     collections::HashMap,
-    mem::transmute,
 };
 
 use utilities::prelude::{remove_life_time, remove_life_time_mut};
@@ -91,88 +90,7 @@ impl Resources {
         self.map.get_mut(&type_id).map(|any| any.as_mut())
     }
 
-    pub fn multi_mut(&mut self) -> ResourceMultiMut<'_> {
-        ResourceMultiMut::new(&mut self.map)
-    }
-
     pub fn contains<T: Any + Send + Sync>(&self) -> bool {
         self.map.contains_key(&TypeId::of::<T>())
     }
 }
-
-// helper
-impl Resources {
-    fn downcast_unchecked<T: Any + Send + Sync>(boxed: Box<Untyped>) -> Box<T> {
-        unsafe { Box::from_raw(Box::into_raw(boxed) as *mut T) }
-    }
-
-    fn downcast_ref_unchecked<T: Any + Send + Sync>(boxed_ref: &Box<Untyped>) -> &T {
-        unsafe {
-            let ptr_to_ptr: *const *const T =
-                transmute(destructure_traitobject::data(boxed_ref as *const _));
-
-            &**ptr_to_ptr
-        }
-    }
-
-    fn downcast_mut_unchecked<T: Any + Send + Sync>(boxed_ref: &mut Box<Untyped>) -> &mut T {
-        unsafe {
-            let ptr_to_ptr: *mut *mut T =
-                transmute(destructure_traitobject::data(boxed_ref as *mut _));
-
-            &mut **ptr_to_ptr
-        }
-    }
-}
-
-/// Allows mutable access to multiple components at once
-pub struct ResourceMultiMut<'a> {
-    map: &'a mut HashMap<TypeId, Box<dyn Any + Send + Sync>>,
-    buffer: Vec<*mut Box<dyn Any + Send + Sync>>,
-}
-
-impl<'a> ResourceMultiMut<'a> {
-    fn new(map: &'a mut HashMap<TypeId, Box<dyn Any + Send + Sync>>) -> Self {
-        ResourceMultiMut {
-            map,
-            buffer: Vec::new(),
-        }
-    }
-
-    /// Returns requested type on success
-    pub fn get<T: Any + Send + Sync>(&mut self) -> &'a mut T {
-        self.get_by_type_id(&TypeId::of::<T>())
-            .map(|component| Resources::downcast_mut_unchecked(component))
-            .unwrap()
-    }
-
-    /// Returns requested type behind this type id on success
-    pub fn get_by_type_id(
-        &mut self,
-        type_id: &TypeId,
-    ) -> Option<&'a mut Box<dyn Any + Send + Sync>> {
-        self.map.get_mut(type_id).map(|v| {
-            let ptr = v as *mut _;
-
-            match self.buffer.iter().find(|v| **v == ptr) {
-                Some(_) => {
-                    panic!("This key has already been borrowed!");
-                }
-                None => {
-                    self.buffer.push(ptr);
-                }
-            }
-
-            let t: Option<&'a mut Box<dyn Any + Send + Sync>> = unsafe { transmute(ptr) };
-
-            t.unwrap()
-        })
-    }
-
-    /// # Safety
-    ///
-    /// use this only when there are no references left
-    pub unsafe fn clear_all_usages(&mut self) {
-        self.buffer.clear();
-    }
-}
diff --git a/ecs/src/type_map.rs b/ecs/src/type_map.rs
index 9d85cdc..ce0a28d 100644
--- a/ecs/src/type_map.rs
+++ b/ecs/src/type_map.rs
@@ -1,4 +1,3 @@
-use std::mem::transmute;
 use std::{
     any::{Any, TypeId},
     collections::{
@@ -26,11 +25,16 @@ pub trait EntityComponent: Any + Send + Sync {
 }
 
 impl dyn EntityComponent {
-    pub fn downcast_ref<T: 'static>(&self) -> Option<&T> {
+    pub fn downcast_owned<T: EntityComponent + 'static>(mut self: Box<Self>) -> Option<T> {
+        self.downcast_mut()
+            .map(|raw| unsafe { *Box::from_raw(raw as *mut T) })
+    }
+
+    pub fn downcast_ref<T: EntityComponent + 'static>(&self) -> Option<&T> {
         (self as &dyn Any).downcast_ref()
     }
 
-    pub fn downcast_mut<T: 'static>(&mut self) -> Option<&mut T> {
+    pub fn downcast_mut<T: EntityComponent + 'static>(&mut self) -> Option<&mut T> {
         (self as &mut dyn Any).downcast_mut()
     }
 }
@@ -72,7 +76,8 @@ impl TypeMap {
     pub fn insert<T: EntityComponent + ComponentDebug>(&mut self, value: T) -> Option<T> {
         self.map
             .insert(TypeId::of::<T>(), Box::new(value))
-            .map(|any| *Self::downcast_unchecked(any))
+            .map(|any| any.downcast_owned())
+            .flatten()
     }
 
     pub fn insert_type(
@@ -85,7 +90,8 @@ impl TypeMap {
 
     pub fn remove<T: EntityComponent>(&mut self) -> Option<T> {
         self.remove_by_type_id(&TypeId::of::<T>())
-            .map(|any| *Self::downcast_unchecked(any))
+            .map(|any| any.downcast_owned())
+            .flatten()
     }
 
     pub fn remove_by_type_id(&mut self, type_id: &TypeId) -> Option<Box<dyn EntityComponent>> {
@@ -136,10 +142,6 @@ impl TypeMap {
         self.map.contains_key(type_id)
     }
 
-    pub fn multi_mut(&mut self) -> MultiMut<'_> {
-        MultiMut::new(&mut self.map)
-    }
-
     pub fn iter(&self) -> Iter<'_, TypeId, Box<dyn EntityComponent>> {
         self.map.iter()
     }
@@ -147,41 +149,17 @@ impl TypeMap {
     pub fn iter_mut(&mut self) -> IterMut<'_, TypeId, Box<dyn EntityComponent>> {
         self.map.iter_mut()
     }
-
-    // fn downcast_unchecked<T: EntityComponent>(boxed: Box<dyn EntityComponent>) -> Box<T> {
-    //     unsafe { Box::from_raw(Box::into_raw(boxed) as *mut T) }
-    // }
-
-    // pub fn downcast_ref_unchecked<T: EntityComponent>(boxed_ref: &Box<dyn EntityComponent>) -> &T {
-    //     unsafe {
-    //         let ptr_to_ptr: *const *const T =
-    //             transmute(destructure_traitobject::data(boxed_ref as *const _));
-
-    //         &**ptr_to_ptr
-    //     }
-    // }
-
-    // pub fn downcast_mut_unchecked<T: EntityComponent>(
-    //     boxed_ref: &mut Box<dyn EntityComponent>,
-    // ) -> &mut T {
-    //     unsafe {
-    //         let ptr_to_ptr: *mut *mut T =
-    //             transmute(destructure_traitobject::data(boxed_ref as *mut _));
-
-    //         &mut **ptr_to_ptr
-    //     }
-    // }
 }
 
-pub trait GetTypeMap<T> {
-    fn get_mut(&mut self) -> std::result::Result<&mut T, ComponentNotFoundError>;
+pub trait GetTypeMap<'a, T: 'a> {
+    fn get_mut(&'a mut self) -> std::result::Result<T, ComponentNotFoundError>;
 }
 
-impl<T> GetTypeMap<T> for TypeMap
+impl<'a, T> GetTypeMap<'a, &'a mut T> for TypeMap
 where
     T: EntityComponent + ComponentDebug,
 {
-    fn get_mut(&mut self) -> std::result::Result<&mut T, ComponentNotFoundError> {
+    fn get_mut(&'a mut self) -> std::result::Result<&'a mut T, ComponentNotFoundError> {
         self.map
             .get_mut(&TypeId::of::<T>())
             .map(|any| any.downcast_mut().unwrap())
@@ -190,75 +168,37 @@ where
 }
 
 macro_rules! impl_get_type_map {
-    ([$(t:ident,)+]) => {
-        impl<($(t,)+)> GetTypeMap<$(t,)+> for TypeMap {
-            fn get_mut(&mut self) -> std::result::Result<($(&mut t,)+), ComponentNotFoundError> {
-                self.map
-                    .get_disjoint_mut(
-                        [$(&TypeId::of::<t>(),)])
-                    .map(|any| any.downcast_mut().unwrap())
-                    .ok_or_else(ComponentNotFoundError::component::<T>)
+    (<$($t:ident$(,)?)+>) => {
+        impl<'a, $($t,)+> GetTypeMap<'a, ($(&'a mut $t,)+)> for TypeMap
+        where
+            $(
+                $t: EntityComponent + ComponentDebug + 'static,
+            )+
+        {
+            fn get_mut(&'a mut self) -> std::result::Result<($(&'a mut $t,)+), ComponentNotFoundError> {
+                let mut types: std::collections::VecDeque<_>
+                    = self.map.get_disjoint_mut([$(&TypeId::of::<$t>(),)+]).into_iter().collect();
+
+                Ok(($(
+                    types
+                        .pop_front()
+                        .flatten()
+                        .map(|any| any.downcast_mut().unwrap())
+                        .ok_or_else(ComponentNotFoundError::component::<$t>)?,
+                )+))
             }
         }
     };
 }
 
-/// Allows mutable access to multiple components at once
-pub struct MultiMut<'a> {
-    map: &'a mut HashMap<TypeId, Box<dyn EntityComponent>>,
-    buffer: Vec<*mut Box<dyn EntityComponent>>,
-}
-
-impl<'a> MultiMut<'a> {
-    fn new(map: &'a mut HashMap<TypeId, Box<dyn EntityComponent>>) -> Self {
-        MultiMut {
-            map,
-            buffer: Vec::new(),
-        }
-    }
-
-    /// Returns requested type on success
-    pub fn get<T: EntityComponent + ComponentDebug>(
-        &mut self,
-    ) -> std::result::Result<&'a mut T, ComponentNotFoundError> {
-        self.get_by_type_id(&TypeId::of::<T>())
-            .map(|component| TypeMap::downcast_mut_unchecked(component))
-            .map_err(|_| ComponentNotFoundError::component::<T>())
-    }
-
-    /// Returns requested type behind this type id on success
-    pub fn get_by_type_id(
-        &mut self,
-        type_id: &TypeId,
-    ) -> std::result::Result<&'a mut Box<dyn EntityComponent>, ComponentNotFoundError> {
-        match self.map.get_mut(type_id) {
-            Some(v) => {
-                let ptr = v as *mut _;
-
-                match self.buffer.iter().find(|v| **v == ptr) {
-                    Some(_) => {
-                        panic!("This key has already been borrowed!");
-                    }
-                    None => {
-                        self.buffer.push(ptr);
-                    }
-                }
-
-                let t: Option<&'a mut Box<dyn EntityComponent>> = unsafe { transmute(ptr) };
-
-                t.ok_or_else(|| ComponentNotFoundError::type_id(*type_id))
-            }
-            None => Err(ComponentNotFoundError::type_id(*type_id)),
-        }
-    }
-
-    /// # Safety
-    ///
-    /// use this only when there are no references left
-    pub unsafe fn clear_all_usages(&mut self) {
-        self.buffer.clear();
-    }
-}
+impl_get_type_map!(<T, U>);
+impl_get_type_map!(<T, U, V>);
+impl_get_type_map!(<T, U, V, W>);
+impl_get_type_map!(<T, U, V, W, X>);
+impl_get_type_map!(<T, U, V, W, X, Y>);
+impl_get_type_map!(<T, U, V, W, X, Y, Z>);
+impl_get_type_map!(<T, U, V, W, X, Y, Z, A>);
+impl_get_type_map!(<T, U, V, W, X, Y, Z, A, B>);
 
 #[derive(Debug)]
 pub enum ComponentRequestType {
@@ -319,21 +259,15 @@ impl PartialEq for Test {
 }
 
 #[test]
-fn verify_multi_mut() {
+fn verify_disjoint_get() {
     let mut map = TypeMap::default();
 
-    map.insert(Test::default());
+    let reference = Test { x: 5, y: 20, z: 30 };
 
-    // test it multiple times, just for sanity
-    for _ in 0..10 {
-        let test = map.get::<Test>().unwrap().clone();
+    map.insert(reference.clone());
+    let old: &mut Test = map.get_mut().unwrap();
 
-        let mut multi_mut = map.multi_mut();
-
-        let multi_mut_test = multi_mut.get::<Test>().unwrap().clone();
-
-        assert_eq!(test, multi_mut_test);
-    }
+    assert_eq!(*old, reference);
 }
 
 #[test]
diff --git a/ecs/src/updates.rs b/ecs/src/updates.rs
index 6a0e46d..f3d52f3 100644
--- a/ecs/src/updates.rs
+++ b/ecs/src/updates.rs
@@ -14,7 +14,7 @@ use indexmap::IndexMap;
 use super::super::timings::Timings;
 
 use crate::*;
-use scene_update_macros::implement_pair_update;
+use update_macros::implement_pair_update;
 
 macro_rules! impl_singleton_update {
     ( $name: ident, $([$var: ident]$(,)?)+ ) => {
diff --git a/scene_update_macros/Cargo.toml b/update_macros/Cargo.toml
similarity index 88%
rename from scene_update_macros/Cargo.toml
rename to update_macros/Cargo.toml
index c6f9228..40fcede 100644
--- a/scene_update_macros/Cargo.toml
+++ b/update_macros/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "scene_update_macros"
+name = "update_macros"
 version = "0.1.0"
 authors = ["hodasemi <michaelh.95@t-online.de>"]
 edition = "2024"
diff --git a/scene_update_macros/src/lib.rs b/update_macros/src/lib.rs
similarity index 100%
rename from scene_update_macros/src/lib.rs
rename to update_macros/src/lib.rs