Black Rock-chan

Black Rock-chan (ぶらっくろっくちゃん, Burakku★Rokku-chan) is a 4koma series by ringo. It was originally serialized on 4-Koma Nano Ace between March 2011 and February 2012 for a total of 10 chapters, with a tankōbon published on the same month as the series' final chapter.

The 4koma series features chibi Rock-chan and motherlike De-chan in a lighthearted slice of life format.

Characters

 * Rock-chan (ろっくちゃん Rokku-chan) - a super-deformed version of Black★Rock Shooter and the protector of the balance in the Otherworld. Compared to her non-caricature version, Rock-chan is clumsy, childish and always hungry.
 * De-chan (でっちゃん De-chan) - she is considered to be the disruptor of the balance of the Otherworld and is the primary enemy of Black★Rock Shooter. However, she turns out to be the one who would always cook for and play with Rock-chan. Despite this, the admits that she cannot control her strength, and often frightens Rock-chan, with comedic results. Later in the series, it is mentioned that she is actually Rock-chan's mother.
 * Kuro and Shiro (クロとシロ Kuro to Shiro) - two silent skull-shaped floating creatures which follow De-chan. Despite belonging to De-chan, Doku and Kuro often take Rock-chan's side whenever Rock-chan and De-chan play to help look after her. The two also act as Rock-chan's guardians when De-chan is away.
 * Su-san (スーさん Su-san) - Rock-chan's friend. She possesses a tendency to do things her way, and often tests Rock-chan's patience. She often uses her robotic arms to toss objects (even Rock-chan herself) into the air, and is even more destructive when throwing a tantrum. Her personality causes Rock-chan to take up an older sister role.

Trivia

 * The first chapter of the series was released on the same day as the browser-based game Puchitto★Rock Shooter.