I'm with nanashi, I wouldn't mind it a bit darker, even just a light grey would be better. Background is kind of lame/doesn't work well too in my opinion.
Not that it actually needs to be changed though.
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