If you loved Ani*Kuri15, try 20min Walk from Nishi-Ogikubo Station, 2 Bedrooms, Living Room, Dining Room, Kitchen, 2mos Deposit, No Pets Allowed
A bridge between a film you've already seen and one most people haven't. 20min Walk from Nishi-Ogikubo Station, 2 Bedrooms, Living Room, Dining Room, Kitchen, 2mos Deposit, No Pets Allowed has roughly 3.2× fewer votes than Ani*Kuri15 — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Ani*Kuri15

20min Walk from Nishi-Ogikubo Station, 2 Bedrooms, Living Room, Dining Room, Kitchen, 2mos Deposit, No Pets Allowed
What they share
Both films are directed by Mahiro Maeda, and they sit in Animation / Fantasy territory. If that's the register that drew you to Ani*Kuri15, the second film will land in a comparable space — through a different lens.
What 20min Walk from Nishi-Ogikubo Station, 2 Bedrooms, Living Room, Dining Room, Kitchen, 2mos Deposit, No Pets Allowed is
This one does exactly what it says on the tin. A woman undergoes a sudden and dramatic reduction in stature. It's a setup that might appeal to fans of both Kafka and Honey, I Shrunk the Kids.