荒川アンダー ザ ブリッジ×ブリッジ

In the dry riverbed of Arakawa River, undefeated elite Ichinomiya Kou (aka Ric) met the lovely homeless girl Nino, a self-declared Venusian. Their awkward love stirs up trouble among the other strange inhabitants of the riverbed. (Source: Anime News Network)