I... I really want to see this kind of manga. Sounds like it would be a great 4-koma or just good comedy-ecchi manga (the ecchi part wouldn't even be needed to be honest).
You snooze, you...Hehe~n.Don't...The EndGet over-confident.Huh?My lower body is... trembling, and I can't move...W... Wait... This sensation...!Kou-kun...
Don't tell me...He took foreplayIn that instant...to completion...!?