Isaku Senagaki is the female lead of the manga and anime. She's the granddaughter of a Yakuza boss—a fact that's basically defined her entire life. To escape that shadow and actually experience something like a normal teenage existence, she transfers to Otowa High School, which is conveniently far from home. She also has a thing for her bodyguard, Keiya Uto, though she hasn't really done anything about it.
Physically, Isaku is striking: platinum blonde hair down to her waist, framing bangs, pale skin, full pink lips, and soft purple eyes. She's average height for a girl her age.
Personality-wise, she comes across as serious and kind of timid. Growing up as the Yakuza boss's granddaughter meant zero normal friendships—just isolation. So when it comes to actually talking to people and fitting in socially, she struggles. It makes sense given her background, but it also means she's wound up pretty withdrawn as a result.
Content compiled by AnimeList.moe from publicly available sources.