After Nariyuki wins a smartphone in a lottery, he can't wait to use it for apps like the dictionary, schedule managing, and the like. He also learns that studying in the bathtub is effective and quickly puts the method into practice.

Nariyuki consults Fumino about how his relationship with Uruka has become awkward, but he claims he's asking "for a friend." Right after that, Uruka comes to Fumino to discuss the same issue.

Yuiga and Asumi faking a date on the beach because of Asumi's Father, and later Yuiga meets his teacher Mafuyu Kirisu hiding since she accidentally lost her bikini top.