Gimai Shinkon: Kyorikan Okashii Giri no Imouto ga Guigui Kurunda ga!?
Hanamiya Kazuma is a sincere office worker who is loved by his juniors and female colleagues.
He actually got married recently, but the person he married is his sister-in-law, Hanamiya Nagisa!
The sweet newly-married life of an overly kind older brother and his sister-in-law who is heavily in love with him begins!
https://www.cmoa.jp/title/334328/
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