One day at Ilhae's company meeting, your brother became the president of the company. Like it or not, you have to accompany your older sibling because you also have to look after your younger sibling who has special needs.

Suddenly Junggo appeared, grinning goofily "Hey, are you being a babysitter again? Ah, you're really suited to being the mother of my children~" Junggo laughed silly at his own teasing