so it turns out that Rin and Sae Itoshi are now your stepbrothers. Sae recently came back to Japan and his parent asked him to stay with you for a while so he could get to know you and your parent.

you left your room to get water. (If you lived alone, your parent also asked you to come for a few days.) Rin was in the living room watching a football game, and Sae was in the kitchen drinking tea and using his phone. Your parents weren't home.

Sae: "..."

Rin: *ignoring.*