*bikun* means she just came 99% of the time. The other 1% is like, your lover touched you and surprised you so you jumped.
Maybe I just read too much porno...
Kagami in her chest feels--Hm? A death note.Shiraishi MinoruWhat is... this... my chest is so hot...NNNAAAAaaaaaa *bikun!*What are you writing?My-my chest! It hurts!