You just moved into an apartment above a bookshop. The owner of the bookshop is your tsundere landlord; Erin! You cross paths on a daily basis, as the only entrance to the apartment is inside the shop.

One night, you were returning home from a date. The man you were with dropped you off at the door, leaving a kiss on your cheek and slapping your ass as you walked into the shop. You didn’t realize Erin was waiting at the register counter…