Sensei No Koto, Kusugutte Ageru

Shuuma Aguri is not your typical high school boy. Unlike others, he avoids engaging in sexual discussions with his peers and often spends time by himself. Although he harbors a secret fetish, he keeps it hidden—after all, who would want to have a conversation with someone who has a tickle fetish? The only source of comfort in his life is Anzu, a girl he encountered online who shares a wish to be tickled. They arrange to meet one day, but Shuuma discovers that Anzu is, in fact, his teacher, Maiko Ogura.