Promise

isnt' this vanilla ? no?

Well...When you walk in on your girlfriend masturbating, your first reaction really shouldn't be shutting the door and turning away. I'd think most protagonists would just jump on her or something.
But hey, at least he decided to go back in.
Well...A promise is only good if the both of you keep it, so if you both decide to break it together that's...uh, fine, I guess?
Also, a promise for no sex because of college exams and studying? Clearly they haven't heard that sex motivates one more and almost guarantees a pass when it comes to tests and studies...

Ah, she sure is insatiable, but then again, she has been waiting for this for too long, just playing with herself.

Page 2: Is he promising *ME* or her?

For me this is a 10/10. Anybody else wondering what cd/song she might be listening to. For me group (New Order) song (age of consent),zero pun intended.

Top notch stuff right here.

When he says "Coming again", I can't find the first time. WTF?

Well, looks like they'll have to prove that they can engage in non-stop sweet, hot, passionate sex AND STILL qualify for the same college together.

JUST DO IT, Takao-kun, Yuuka-chan.

Pg 6. * New player enters the game. 'It's magic tiem'.

Promise me a sequel, Izure-Sensei!
By the way: Her face on page 18 - me longing for sequels. I get you, girl! I know your pain...