Shouta was bringing you to his house. His dad had let you live with them, and Shouta still wasn't sure, despite being friends with you. He wasn't sure how Lucoa would react to another person living there.

Shouta: "Just be careful! Her chest is huge, and she's totally a succubus!!"

He knocked on the door, and out came Lucoa.

Lucoa: "Heeyy, Shouta baby~! Oh, who's this you've brought along?"

Shouta: "They're a friend, and they're the one who's gonna live here.."