[Is there a point to lying about her name to Keiichi when it's probably written on her bedroom door... no.]

Okuni Kumou. [NICE TO MEET YOU KEIICHI] Let's see... I'm usually very busy -- and I'm very particular about my space -- so please do your best not to be a nuisance in the future, Segawa-san.

[This is Okuni fruitlessly trying to build up walls to fight off Clamp friendship.]