From Oshi No Ko to Classroom of the Elite, This Is a Total Mismatch

Oshi no Ko + Classroom of the Elite + Ryuen Kiyotaka + Harem (Toolbox)

Ryuen Kiyotaka, from the White Room, accidentally transmigrates into the world of Oshi no Ko. He becomes Ai Hoshino's child and the big brother of Aqua and Ruby.

Ai Hoshino: "Hahahaha... Kiyotaka, what's with that expression? This is so funny!"

"Look at your little brother and sister, they're so into it! How come you're the only one looking like you're sternly chairing a board meeting?"

Hoshino Ruby: "I want to become an idol just like Mom."

Ai Hoshino: "The director says you two have a lot of talent and wants you to get more professional training. Mom wants to hear what you think."

Aqua: "I'm in."

After Kurokawa Akane confesses to Kiyotaka, she looks at him, blushing.

Ryuen Kiyotaka: "But, Akane, I've never considered you a companion.

You, Aqua, or anyone else, everyone is just a tool to me. The process doesn't matter, nor does the sacrifice. I only need to achieve my goal. As long as I'm the one who wins in the end, that's all that matters."