User blog comment:TheCarrotSaysYumYum/FT0 2 - Game of Truth, Review./@comment-121.54.54.39-20140818043737/@comment-1839664-20140821031918

Okay, let's start with the easy one. Yury did not use plural when addressing to Mavis.

Now the harder one, the game:
 * What Yury said about the additional rule in Japanese, 互いに共通するものは禁止, is better translated as "Things that are shared between one another are forbidden", such as both of them shared the fact they have eyes and heart. In other words, when Yury asked if Mavis was in her teens, because Mavis answered yes, that means both of them shared the fact that both of them are in their teens.  And because Yury's the person was the one who asked this similarity first, he lost.