Kujira no Oshitate-san

Two endearing awkward men. Once they come face to face, Younosuke and Suzunari, both heirs of long-established tailors, immediately throw unpleasant sarcasms at each other. Just when Younosuke thought that their quarrelling relationship would go on forever, he was told to go for a marriage interview…

(Source: xiaojiangworld)

Note: Chapter count includes 1 extra.