Escape from the Room 105

[GamersHood]

Escape from the Room 105 is a room escape game where you need to use your escape skills in order to get out of the room.

http://tsukisuna.zashiki.com/105.html

Please use spoilers for hints and walkthroughs:
[spoiler=Title Here]Enter text here...[/spoiler]

Please do not post a video walkthrough for 7 days.

[SueJ999]

Might be just me, but after smashing through the wall, I think there's a slight language barrier...

[clover3leaf]

Yes I think you're right.
I have

a hammer (used) a bottle of BTP; a strip of paper with acid and alkaline

code for drawer

on picture

After knocking through the wall no idea what to do next