TV-Series
Description
Keshikasu begins as an ordinary white eraser who transforms by placing an eraser crumb on his head and wearing a paper costume, adopting this identity to pursue his ambition of becoming the supreme entity among stationery. This drive fuels competitive antics and confrontations with rivals like Kokuban Keshi, a blackboard eraser, and Shūseieki, a correction fluid. His existence centers on Bōzu, a schoolboy who owns him. Within stationery relationships, Chibikasu is recognized as his younger brother, another white eraser, though their interactions remain undefined. Enpitsu, a pencil, engages in collaborative or antagonistic dynamics depending on scenarios.

Recurring physical comedy in the original manga focused on his anatomy, particularly depicting male genitalia through vulgar gags like exposure or detachment. The television adaptation censored this via obstruction techniques or dialogue alterations, such as replacing explicit terms like "chinko." An original video animation bundled with a fan book reverted to the uncensored portrayal, aligning with the source material.

In crossover media, he appears consistently. Within the Duel Masters anime, he manifests abruptly, retains his self-proclaimed title "The Idol of Stationeries," and exhibits similar arrogance and resilience—mending himself with glue after shattering. His rivalry extends to Deckie, prompting competitions featuring inflatable underwear gags and unconventional duel tactics like deploying proxy cards. In the Inazuma Eleven game series, he functions as a playable opponent or character, utilizing special moves including Shooting Cut, Twin Boost, and God Knows Impact during matches.

His personality emphasizes ambition, resilience, and self-importance across appearances. Conflicts involve physical battles against other stationery, employing erasing capabilities or facing consequences like being crushed by heavier objects such as permanent markers. He demonstrates regenerative abilities, repairing himself after damage, as seen when reconstituting from fragments. No long-term evolution occurs; his objectives and comedic conflicts remain focused on achieving stationery supremacy through repetitive, episodic struggles.