Kouhai Nikki., Kouhai Diary., 夏の日、こーはいと、バス停で。, Natsu no Hi, Kouhai to, Bus-tei de., On a Summer Day, with My Kouhai, at the Bus Stop., 冬の日に、後輩と、こたつで。, Fuyu no Hi ni, Kouhai to, Kotatsu de., On a Winter Day, with My Kouhai, by the Kotatsu., 蒸し暑い日に、後輩と、畳の上で。, Mushiatsui Hi ni, Kouhai to, Tatami no Ue de., On a Hot and Humid Day, with My Kouhai, atop the Tatami Mats., 後輩と校舎裏で。, Kouhai to Kousha Ura de., Behind the School Building, with My Kouhai.
1. On a Summer Day, with My Kouhai, at the Bus Stop. A guy meets his underclassman who confessed to him a month ago at a bus stop. When he questions her feelings, she proves to him that they’re real. 2. On a Winter Day, with My Kouhai, by the Kotatsu. 3. On a Hot and Humid Day, with My Kouhai, atop the Tatami Mats. 4. Behind the School Building, with My Kouhai.