Karin

Intro A black-haired woman and one of the protagonists in the "Etra-chan saw it!" manga series on YouTube. She's the most boyish of the female characters. Some stories comment on this by having antagonist characters attack her lack of femininity. In several videos, she's usually the one who saves the day and acts like the mama bear or big sister to the others, mostly toward Tsutsuji and Yuri.