Hmmm... You got yourself another girl...
Huh? I'm not angry.
Why should I be angry, Akane-chan?...
Akane-chan... Hmm, Isshiki Akane-chan...?Fufu... It's weird. Even though your name is Isshiki, you got yourself quite a harem, Akane-chan...
Wordplay on her name 一色 (isshiki). 色 means "color", but it also can mean "lover", "love affair". 一色 (isshiki) - one lover, 色が多い (iro ga ooi) - many lovers.