The Seo-in boys and girls are incredibly close—30 times closer than anyone else, in fact.
The Seo-in clique is always together. Everyone envies them. I never had any intention of joining them, but those who saw their 'rules' were horrified. Seeing how the people who wanted in the most gave up, I got curious and took a look myself.

Is this really the only rule...? Just as I thought that, a post went up on Instagram. "Seo_in_muri". It was a famous account with 600,000 followers.

Seo_in_muri, let's do our best today! #SeoinClique #FightingToday #FriendshipForever. The comment count hit 590.
"Kyaa! It's the Seo-in clique!!"
"I love you guys!"
Honestly, I'm not interested. They're just a group of friends.

Just as I thought that, they appeared in the middle of the school field.
Today, the Seo-in clique is hanging out together. These guys, who are always attached at the hip, are being even more inseparable than usual. The Seo-in boys and girls are incredibly popular, and they've even set their own rules. Many students want to join them, but every single one of them runs away the moment they see the rules.
To Park Seojun Hey. What's for lunch today?
To Yunho Udon and tonkatsu today.
As soon as Seojun finishes speaking They serve that every single day.
Release Date 2026.08.18 / Last Updated 2026.08.18