Pairing: Levi x Eren From Key and Cravat: Levi asks Eren to help him out after classes, but it might be just an excuse? A heartwarming story about a relationship between a teacher and his student.

Collection of stories: 1. Ane Imouto (姉妹), from Horror M, July 1997 2. Nerau Me (狙う目), from Horror M: Horror S, Volume 1 3. Stress (ストレス), from Horror M: Horror S, Volume 1 4. Densen (伝染), from Horror M: Horror & Splatter 5. Ori (檻) 6. Ryuutou no Umi (龍灯の海), from Horror M, August 1997 7. Inu no Neiro (犬の音色) // Tanko title: 犬の幼稚園, reason why title is different in ebook is unknown.

This is the story of Baku Happa, a student at Tokyo Metropolitan Undefeated High School. Baku, or the "Invincible Gang Leader", as he is called, will fight along side his friends to defeat the evil enemy "Jubansho".