Escape from the Public Bathhouse 2 (Sento 2)

[Mistery]

This is the sequel to Escape from the Public Bathhouse (Sento), currently only available in Japanese. Find and use items and solve puzzles to escape. Good luck!

Play Here

Please use spoilers to give hints:
[spoiler=Title Here]Enter text here...[/spoiler]

Please do not post a video walkthrough for 7 days.

[Lilliputt]

Oooookay... lotsa incomprehensible notes and things that I am almost sure are leeks. I have stuff in the inventory but so far only used

power drill... to get another mysterious note

Edit: Progress! Used

axe and got another confusing note

Edit2: Finally got out after a long break to clear my head. Had to read some hints on another site to get it done though. Very very confusing game, I must say.

You have to find a blue button for the final puzzle. It's on a doll in the bin inside the room that is next to the Water Closet. You should also examine items carefully. Some items can be found on the ones you have in your inventory. As for the code... I honestly didn't understand completely how that was solved and so I got some help for it. Never used hammer and never used that peculiar sheet of paper or whatever that thing is

Since I couldn't solve the code myself I don't know if language is a problem for this game but I doubt it. However it is my impression that being good at math helps