Mudak

Anyone know this bl manhwa where the illegitimate child of mobility was sent as a bride instead of his sister he later came clean about this and got married as a guy bc there was a historical record of dukes with husband or something

Guy gets transported as Demon Lord lich king (?)- Skull guy. Then gets turned into a baby of an insane knight family whose job is to kill the demon king and he stays a baby for the next 10 years to conserve energy it was pretty funny