At the bowling club of Ikkokukan High School in Nagano Prefecture, Mai, the club captain, prioritizes everyone's enjoyment over winning. However, her passionate junior, Rina, declares, I want to win. When Rina threatens to quit the club, Mai tries to convince her to stay, but Rina challenges her to a match and says she'll only remain if Mai wins. As the game begins, the bowling ball suddenly starts to glow, and all five club members are engulfed in a mysterious light. When they awaken... they find themselves transported to none other than the Warring States period! (Source: Official site, translated)

Fourth season of Osomatsu-san.

Seeing everyone else enjoying their youth, socially anxious Renako Amaori is dead set on becoming an extroverted girl. Despite her reclusive past, she changes her appearance, practices conversation, and enrolls in a high school free of anyone that would know her. While she is quickly able to befriend the famous model Mai Ouzuka, after Renako joins her friend group, she realizes pretending to be a completely different person is no easy feat. Soon, Renako and Mai have a heart-to-heart and share their troubles with each other. After the sincere discussion, Renako truly believes they could become best friends. The very next day, however, the unthinkable happens—Mai confesses her love to Renako! Although Renako is not interested in dating, Mai insists the two begin hanging out alternately as friends and a couple, while figuring out which type of relationship suits them better. Determined to create a blissful friendship, Renako tries her best to convince the stubborn Mai. However, Renako herself might have a change of heart as Mai's advances continue to get bolder.

Second season of Grand Blue.