A booklet packaged with Harta volume 46 at select stores. It's an anthology of one-shots from various authors focusing on the theme of 4-koma manga. (Source: Natalie, translated)

A collection of chapters from various one-shot anthologies included as extras with the purchase of certain "Fellows!" magazine volumes including Maid Fellows, Robot Fellows, Music Fellows, Megane Fellows, and China Fellows.

Isshiki joins the high school mahjong club after falling in love with a senior at the same school, professional mahjong player Shiratori. (Source: Web Ace)

A booklet included inside Harta volume 50 of Hakumei to Mikochi manga and illustrations written and drawn by various Harta contributors. (Source: Natalie, translated)

The oldest of the student apartments designated by Karenjaku Culinary Arts University, the two-story wooden apartment building is in disrepair. It is a slapstick daily drama about the unique residents who don't care about the building's age because they are close to the university and the rent is cheap. The story begins with Hikaru Yoneda moving to the house, and the story revolves around him. Cooking scenes are interspersed with the story, and recipes are also revealed.

Collection of one shots about women fighting against illness, written and draw by eleven different authors.

Lolicon manga doujinshi published by Gamfreak before becoming the game company.