I'll Be by Your Side (S01E02)

Mizuho has always viewed Kizuki as the group's sensitive little brother, but lately, he's been flirting with her. This unexpected shift leaves her feeling conflicted, as she imagined they would remain childhood friends forever. She's so preoccupied with thoughts of him that she finds herself lost in her own head, even risking a comment that might drive Kizuki away for good.