Sounds very much like MUM-058. [Javfor.me stream](http://javfor.me/66332.html#) I didn't watch the whole thing, but it started like you said. 

Here's a bibliography if it's not the right video, but one of the girls is right. 

[Konoha's works] (http://sougouwiki.com/d/%a4%b3%a4%ce%a4%cf)

[Arisa's works](http://sougouwiki.com/d/%a4%a2%a4%ea%a4%b5)

Looking for an old JAV I used to have. Starred two young-ish looking girls, fairly sure they were named Konoha and Arisa. At some point they get invited (?) into a guy's apartment, and then the action happens. Unfortunately, there seem to be a lot of cases of girls with those names working together, so it's been a pain to even get a lead on it.

Schoolgirl-themed JAV