Too Late (S01E05)

Iori and Kohei show up to class in their underwear, completely unfazed, but the stares from their classmates are anything but friendly. The tension arises from the rumor that Iori is dating Chisa, and the others seem ready to pounce. Realizing they're in over their heads, Iori and Kohei propose organizing a mixer to ease the situation. They enlist Azusa’s help to invite her friends, but to their surprise, she brings along Aina Yoshiwara, known as the "Cakey" girl from the Izu Spring Festival!