"Today is my safe day, so please pay me a visit in my room." These bold words were addressed to me, Sakuradamon Jirou, from Shiinamachi Kaguya-senpai, a senior library monitor. Filled with anticipation, I visited the "Clock Tower Caretaker's Room" where Senpai lived, only to discover Senpai collapsed on the floor, all covered in blood. Then the situation proceeded to develop rapidly in an unexpected direction! The culprit is someone from around me? What secrets do Senpai harbor? Also, the truth about the past and the blood relations that I have kept hidden all these years and never told anyone, to think that-- (Source: Baka-Tsuki)

A high school boy, Kujujin, breaks the seal of Sylvia, a young girl who looks like the strongest vampire.

The manga is set in a world where "demon-possessed" individuals appear every time there is a great disaster or war. The demon-possessed wield demonic powers, and if left unchecked, will use them to fulfill their selfish desires. The Holy Endor Academy was established to counter, secure, and re-educate these demon-possessed individuals. One day, a seemingly normal high school student named Konoha Himesaki enters as a low-class criminal, but she is in truth a powerful magic user.

Short manga volumes that were bundled with disc releases of anime adaptation.

Short stories about the past from the girls of the manga Trinity Seven. Volume 1 - Takes place between chapters 38 and 39 of the main manga.

21 sailors who continue to fish for tuna to satisfy the appetites of Japanese people. However, no matter how strong a man of the sea, he gets hungry. The new head chef Saijo, who has boarded the 58th Jueimaru, wields a knife against the hunger of the fishermen and the kitchen being destroyed by the rough sea...! A work with the spirit of master craftsman Yutaka Aoyagi, which depicts men risking their lives and friendships in the ocean at the end of the world, is finally available in book form!

Doraemon explains how his gadgets work in detail!

One day, "disaster" struck, destroying the town and killing Cruz and his sister Artie. However, Cruz woke up to see a dark elf girl named Enju. She asks Cruz, "Do you want your life to end like this, or will you become a god to fight off the 'disaster'?" (Source: Comic Nova, translated)