Mojiponika!

While helping at his grandfather's embroidery shop, Tsumugu meets Gina, a girl wearing a biker gang outfit, who asks him to embroider some kanji characters on her jacket for good money. Although Tsumugu is skilled at embroidery, he would rather make fancy scenes rather than embroider boring kanji characters. But through Gina's love for kanji and Japanese culture, Tsumugu starts to see things differently…

(Source: Natalie, translated)