Munasawagi no Houkago

Mitane Yamamura's class decided that they were going to run a cafe for their school's culture festival. To help she is going to make the maid clothes as she is one of the three otakus in the class that makes her own cosplay costumes. A classmate named Kana Ichinose volunteers to assist her and after school they both go to Mitane's house and something unexpected happens...