Eren the Southpaw

The story follows Koichi Asakura, a designer for an ad agency who works hard but receives no recognition. After being dropped from a project, he visits a place from his past, where he met Eren Yamagishi. Eren, meanwhile, is recognized as a genius left-handed graffiti artist in New York, while enduring the struggles that come from her own path in life.

(Source: Crunchyroll)
Hidarikiki no Eren