Talk:Yuri Alpha/@comment-78.110.70.16-20180914034403/@comment-34150213-20181007070426

I'm pretty sure only the homunculus maids that was created by Yamaiko call Yuri big sister because they technically sister to each other. The known maids that was created by Yamaiko were Increment and Decrement duo (quite a math like term Yamaiko sensei come up with). This mean that Solution Epsilon technically have quite a lot of sister since her creator Herohero is one of the three major responsible for creating the homunculus maids.