PandaWarrior's manga / #Age Gap(7)

Uke is an omega prince married off to a child king. The king is the seme but his brother ends up taking over the castle and "killing" him. Seme who was once small, comes back grown up and goes to defeat his brother so that he is worthy to be uke's mate. Uke is the queen.

Uke heard that seme sleeps around for money. Turns out seme just went to the same school to watch uke as he liked him after meeting him at a work party in the past. Uke's dad is the CEO of the company. Seme played uke and already works for the company, setting up fake info to lure uke.