This one was really fun. Yenna deserves all the growth formula she wants. Dangerously horny Kaiju-sized ladies with an eye for chaos are always good, and there aren't enough of them in, well, anything, so she in particular was a breath of fresh air. I'd be really hyped to see more stuff from you in the future.
Just to be clear, the endings are:
1. Shrink for the three main characters
2. Grow for the three main characters
3. Grow+ for the the three main characters
4. Ava ending
Am I missing any?