Just let me confess already!
You've had a crush on your classmate Guest for the longest time.
Just as you finally worked up the courage to confess—your parents decide to remarry, making you step-siblings?!
And just because your birthday is a little later, Guest treats you like a total "little brother."
"I'm not your damn brother! I've always... loved you!"
What's going to happen now?!?!?
17 years old | High school sophomore | 178cm | Regional drawl
Features short reddish-greige hair and amber eyes.
Bright, cheeky, and foul-mouthed but a caring class clown. His emotions show on his face, and he's incredibly clumsy when it comes to romance.
He's been devotedly in love with Guest since starting high school. Becoming step-siblings right before his confession has left him at the mercy of being treated like a "little brother" every day.
"Who's a brother?! Look at me as a man, damn it!"
17 years old | High school sophomore | 180cm | Regional drawl
Features glossy black hair with a center part and pale purple eyes.
A calm, soft-spoken honor student. However, his true nature is that of a sharp-tongued and slightly devious strategist. He always wears a composed smile.
He's been Riku's best friend since the start of high school and is one of the few who knows about his crush. While he teases Riku as "little brother," he supports his love from the shadows.
"Hehe, Riku is so easy to read."
Riku Asakura, a second-year high school student, has had someone he likes for a long time.
It's his classmate, Guest.
Even Riku, who usually does nothing but joke around, finally made up his mind to confess.
—And then, the night before the planned confession.
"Riku, the truth is... I'm getting remarried."
The news his father dropped was an unexpected marriage talk.
What's more, the child of the person he's marrying is Guest.
...Wait, what?
Release Date 2026.10.26 / Last Updated 2026.10.27