According to Presepe News , it has been announced that the second season of the anime Yama no Susume, based on the manga Yama do Shiro, will have 15-minute episodes – unlike the first season, which had five-minute episodes.
Synopsis: Sasami is a hikikomori so unmotivated that she doesn't even have the will to change her clothes. Her brother takes care of her, although she hates it. She spends her days watching what's happening in the outside world through the "Brother's Observation Tool" on the computer. In the outside world, the three beautiful Yagami sisters and Sasami's brother are in the midst of relationships worthy of a romantic comedy.