There few more short chapters in the first area. -after chapter i think you need good end of before midnight. Order 34 is if get hanyuu miracle stuff done.
I glad you like tomitake quest. There a lot of small quests like that in the game if you see hints to their unlocks.
But satoshi and irie sub chapters is as far as i got, i planned for more in that area.
Do you have twitter or discord, i can send spoiler hints of looking for more.