English translated version is up on lah.li
If you click on the falling letters in order it activates Monkey Mode.
If you click on the letters repeatedly not in any order, it teases you with a very hard mode that is unwinnable.
Sorry to bother you again, Ryzen. This time's its just a normal reupload request. You might want to update it first to its v1.02, if you're not too busy. 炎のおっぱい異世界 おっぱいバニー学園