Shinogawa Hiroshi dropped out of school after being inspired by delinquents like Iguchi Tatsuya who live by their own rules and who speaks with his fists if anyone opposes him. He spends his days hanging out with other hoodlums, but Hiroshi is all mouth and if he gets into a fight, his ass is easily handed to him. However, this close group of friends, including Tatsuya, are there to protect him when his big mouth gets him in real trouble. However, there seems to be a storm gathering within the gangs of the city and Hiroshi and his crew might be caught in the middle of it! (Source: MangaHelpers)

Tomoda Ryouichi is on his way home from prep school when he is suddenly asked to clean the universe from space pests. Together with the three female androids: Mitsuru, the attack unit, Sherazado, the defense unit, and Asheru, the mobile unit, Ryouichi becomes the invincible hero "Esugaiya" and defeats the pests to preserve the peace of the universe. [Written by orithyea]

It's the beginning of 1998. A young genius in electronic engineering, Tatsumi Daiba, has far exceeded the performance standards in the modern science with the creation of the SPARC. With SPARC´s excellent analytical ability, having built a network expanding over the whole world and having the capability to move its mechanical arms at free will, Tatsumi´s judgement over the evil in the city streets commences.

A story that reveals how a pre-6th Gen Head Tesshou Kawachi first encounters and then joins The Front of Armament, and also meets characters like Shougo Murata.

There was a "battle" a year ago. A contagious disease that suddenly hit a rural area? In the mass death of the inhabitants by the population, strange capabilities develop in young people who survived while infected. They will use that ability to fight the variants who appeared at the same time with this disaster. *Note: Place second place in tankoubon category of "Kono Light Novel ga Sugoi 2019".*

A sequel (4 chapters) to celebrate the 15th anniversary.

A poisoned human being is generated from waste fluid in a pharmaceutical company's experiments. He is not allowed to touch people, but one day he meets a kind-hearted woman!

On a colleague, Professor Kita's, suggestion, Associate Professor Saikawa Souhei and his student Nishinosono Moe head to Kita's research institute, where various experiments are being conducted in a low-temperature research lab. During the night a murder takes place: two graduate students are found dead in the lab. How did the killer enter the locked room? How did they leave?