This was my first thought and I wouldn't be surprised considering that My Neighbor Totoro and Grave of the Fireflies was originally released as a double feature. Meaning they were intended to be watched one after the other.

https://kotaku.com/the-surprising-similarities-between-my-neighbor-totoro-1844747252

Both movies have direct (sometimes shot for shot) parallels which portray the dichotomy of childhood life. For example, the scene in GotF where they frantically try to evacuate the house vs in MNT where they are playfully searching the house for the staircase. This video does a good job of describing it.

https://www.youtube.com/watch?v=a9WJhV1W1pg