Naruto: The Outsider's Resolve - Chapter 1.4 (004):

(Women disguised as men) Strong women and men with black bellies.

‘He’ is a rare ‘male god’ who is handsome, wealthy and has no gossip. And he is an ordinary man who hits a wall when he gets along with a man and a woman.

A contract bound the two tightly together. Facing the indifferent ‘him’, he was always cautious, fearing that ‘he’ would fall in love with his prosperous appearance.

Isn’t the legendary ‘he’ aloof and unfeminine? It doesn’t matter, take the initiative to bring him. When the rare ‘male god’ identity is revealed, he not only has to face female love rivals, but also a large wave of male love rivals ahead. ‘What should I do if my daughter-in-law is too handsome? ’ ‘Being coquettish, being cute, and rolling around’

“Mother~Mother…” A certain neglected baby was hanging on his lap with an aggrieved expression on his face. As soon as the words came out, a chestnut fell on the baby’s head, “How many times have I said that I am your father and that is your mother?”

- Description from novelbuddy

Collection of short stories.

- Description from Novelupdates

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…