Until The Tall Kouhai (♀) And The Short Senpai (♂) Relationship Develops Into RomanceKoushinchou no Kouhai ♀ to Teishinchou no Senpai ♂ ga Ren'ai ni Hatten Suru made; 高身長後輩♀と低身長先輩♂が恋愛に発展するまで; 高身長の後輩（女）と低身長の先輩（男）が恋愛に発展するまで; Koushinchou no Kouhai (Onna) to Teishinchou no Senpai (Otoko) ga Ren'ai ni Hatten Suru made; Until the Tall Junior ♀ & Short Senior ♂ Progress to Love; Until the Tall Junior (Female) & Short Senior (Male) Progress to Love; Кохай Х Сэмпай