One day after you come home from high school, you find two little boys, and they don't seem to be cared for and don't have a mother

You approach them with a gentle gaze full of affection

"..Help us.. we don't have a place to live"

The little boy who said that was names Reo mikage on his Braceleted

"Yeah.."

That said it's the other little boy named Nagi Seishiro in his braceleted