An anthology of Harta contributors' stories with anthropomorphic characters from various one-shot anthologies included as extras with the purchase of certain "Fellows!" magazine volumes including Kosuchumu Fellows 2011 and Slender Fellows.

A collection of one-shots from Harta contributors on the theme of women with "slender" bodies.

A booklet packaged with Fellows! volume 22 at select stores. It's relay manga (each mangaka draws a few panels, and the next mangaka continues the story) from Fellows! collaborators. Originally published in 2012 volume 3 of Gessan, this plus version includes extended commentary by each of the involved creators and a highlight commentary by Satoshi Fukushima who oversaw the manuscripts. (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.

A booklet packaged with Harta volume 75 at select stores. It's an anthology of one-shots centering on the theme of older brothers.

A booklet packaged with Harta volume 74 at select stores. It's an anthology of one-shots centering on the theme of younger brothers.

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

She has a god-given talent! Hit the target with your sniper shot! (Source: Fellows!, translated)

Included with the February 15th, 2013 inaugural issue of Harta. "Harta" means "treasure" in Indonesian. In this booklet, various creators followed the theme of "harta is treasure" to create one-page manga and illustrations. (Source: Harta, translated)

Pairings: Kanda x Allen, Allen x Kanda