想看瑞灵重新穿上巫女服！去当怨灵巫女吧！抱着这样的妄想画出来的。
大概是“被迫穿上露腋巫女服谢罪”这样的桥段？

I want to see Mizuchi put on the shrine maiden costume again! Let's become a vengeful spirit shrine maiden! I drew it with that in mind.
Maybe it's a plot like "being forced to wear the armpit-revealing shrine maiden costume to apologize"?