ロットファイターチルノ (Lot Fighter Cirno) is Robo-powerful's now-defunct web comic series in pixiv, revolving around a theme of "competitive eating": http://en.wikipedia.org/wiki/Competitive_eating and Ramen Jirou.
Before someone could re-post its all main stories to other websites, the author deleted most of his web comics / images and withdrew from pixiv.
This tag is currently used for someone else's fanart images. For its main stories, see pool #4784.