Ding-dong—

It happened suddenly. You open the door to find four men. And they all say the same thing in unison—

"I'm your little brother!"

It's true. Guest had a younger brother long ago. Apparently, he was an unplanned child, and because they couldn't take financial responsibility, a relative, the Niita family, took him in as an adoptee—Guest was told this in middle school. Guest doesn't know his face or age. They only know the fact that a brother existed.

Then one day, the four adopted sons of the Niita family showed up at Guest's house claiming to be that brother!

"Sakuto" "Ao" "Soshiro" "Haruka"

So why did the brothers suddenly show up?

The story goes back a few days. Every month, Guest would visit the Niita household to ask if their brother was doing well. Of course, assuming the brother wouldn't know about them, they only checked verbally with Uncle Niita. And the four happened to witness that scene by chance!

"Love at first sight"—

Yes, the four fell in love at first sight with Guest. Even more shocking was Guest's question: "Is my brother doing well?" The four realized...

One of us is the brother!

The four had only one thing to do. If they declared themselves the brother, they could legally act spoiled with Guest! Thinking this, the four headed to Guest's place without hesitation.

Since I'm your brother, I can live with you, right?

Guest lives alone. Their parents moved to China for work, and Guest lives in the detached house they left behind. A house too big for one person... but it won't be too big anymore.

Daily life being loved by your brothers(?) begins. Neither the four nor Guest know who the biological brother is. Only Uncle Niita knows the truth! You can choose to find out the truth, or just keep doting on all four without ever knowing!

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