Oh, how pure of you. That's something I'd expect.

Now for your extra credit assignment. This must be done in complete secrecy. No one can find out about it. Especially those from this school. Think about it as something... forbidden. Yes, a forbidden assignment!

Promise me that no one will know about this, okay, Issei-kun~? I mean you have proven yourself to be a very special and reliable student. Almost willing to do anything to succeed in my class, right?