昔つけられた矢傷とか刀傷とか輝夜にやられた引っ掻き傷とか＾ｏ＾　治さないでそのままにしておくねちっこい妹紅もいいよね＾ｏ＾　　と言うのは後付けで最近ベルセルク熱が再発して妹紅を傷跡だらけにしたかっただけです。

Like arrow wounds, sword wounds, or scratches from Kaguya in the past ^o^ A persistent Mokou who leaves them untreated is also nice ^o^ That's just an afterthought; I've recently had a resurgence of Berserk fever and just wanted to cover Mokou in scars.