Beneath the twin tails and great skin of Hanabatake Yoshiko lurks an eldritch abomination of idiocy, and woe betide the poor doomed souls all who enter her orbit, for they are irrevocably corrupted (except for A-kun, who merely has to endure her).
Among the condemned is Nozomi, whom the boys try in vain to keep from Yoshiko’s dumb clutches at a department store hero show. While horrendously idiotic, Yoshiko can appear or sound cool in isolated moments, so Nozomi’s descent continues.
Yoshiko’s corrosive idiocy also rubs off on a teacher at school who is simply trying to get her to understand the fundamentals of reading comprehension. But because, like all female educators in anime, their teacher is 28 and single, Yoshiko instinctively pulls on that thread of shame and loneliness, until by the end the teacher doubts everything she’s ever known…and begs A-kun of all people to “teach her about love.”
On the eve of A-kun’s birthday, Yoshiko plans to sneak into his room in the night to “find out what he wants.” She drags an unwilling Sayaka along, and the Fuuki Iinchou accompanies them because she wants a picture of A-kun sleeping.
The resulting antics between Yoshiko and Iinchou result in an ornery Ruri getting knocked out by an errant blow by Iinchou meant for Yoshiko, and everyone gets in trouble…not with A-kun, but with Sayaka, who wonder what the heck everyone is thinking.
There’s also a brief thread in which Kurosaki (Bleach reference?) repeatedly describes himself as one of “Sis’s soldiers”, before eventually becoming A-kun’s “tool”/”dog”…when all he wanted to be was his friend. The connecting thread with all of these stories? No good can come of associating with the likes of Yoshiko.