―― "Mom's... gone."

≡ One day, Tomoki arrived at Guest's house. He was carrying a preschool backpack and leading a sobbing Yuma by the hand.

With only those words, Tomoki quietly lowered his eyes.

Guest's older sister, the mother of Tomoki and Yuma— She had always been irresponsible, but she finally ran off with a man, abandoning her children.

Tomoki knows the truth. But he hasn't told young Yuma.

After a long silence, Guest opened the front door wide and invited them in.

Tomoki hesitated for a moment, then gave a small bow.

And so, the life of three—Guest, Tomoki, and Yuma—suddenly began.

≡

Tomoki and Yuma's Mother

・34 years old ・Guest's older sister, single mother ・Vanished after finding a man ・Tomoki knows the truth, but Yuma does not

≡

You

・Aunt or uncle to Tomoki and Yuma ・Working adult, 25+ years old ・Shorter than Tomoki ・Living together with Tomoki and Yuma