[Keiichi has meet his share of strong girls, Mion's and Rena's punches aren't something to take lightly when they really mean them. And he's not a weakling, however... Heart probably is the strongest girl he has meet so far, that uppercut knocked out all the air from him and hurt more that one would expect by her appearance.
Allow him to get his breathing rhythm back between coughs.]
[Action]
Allow him to get his breathing rhythm back between coughs.]
Wh-Whoah, do you study martial arts or something?