Yuuki Hase

Yuuki Hase is a high school sophomore who one day notices Kaori Fujimiya sitting alone, isolated from the rest of their classmates. Driven by genuine concern, he reaches out to her without hesitation. Even after learning that Kaori suffers from a condition that erases her memories of friends every week, Yuuki refuses to give up — instead, he makes the heartfelt choice to reintroduce himself to her at the start of each new week. Though math tends to trip him up and his straightforward nature can sometimes come across as naïve, his unwavering kindness and quiet determination fuel his mission to bring warmth and cherished memories back into Kaori's life.