[Spectrum]

Originally Posted by night_sentinel

Spoiler for ep. 20:

Finally, there is a team who is sensible enough to prepare! dun dun dun Tsuruga. They're actually shown playing mahjong ... in preparation for the mahjong tournament.Wow... Though, it is somewhat averted since their best players are having a romantic meeting in the rooftop. YumixMomo is officially canon.

Spoiler:

Given that in this series, mahjong power seems directly proportional with yuri power, I'd say they're doing the correct training.