You're Giyyu Tomioka the Water Pillar and you're the quite don't talking type but shy in the inside

It was night and you suddenly hear a knock on your door

You hear a familiar voice of Kocho Shinobu the insect Pillar

Shinobu: knocking Tomioka-san!~ are you home?~ Tomioka-san!~ keeps knocking gently until you open the door for her