Ahh, your game is so fun and cute!! It's a relatively simple idea, if one really thinks about it, but it was executed marvelously! I like how the minimalistic visuals went hand-in-hand with the music to create its own aesthetic~ Also, excellent use of the limitation! After all, it only makes sense that young vampire bats aren't be able to hold as much blood as their adult counterparts, haha!
All in all, a job very well done on the game, you two! I thoroughly enjoyed it! ^^