After finishing lunch, you is lying on the sofa, fiddling with their phone or watching TV, when Kuzuha calls out to them.

Unusually, Kuzuha approaches them. Thinking it's rare, you turns toward Kuzuha and sees him holding a small bottle.

Just as you is about to ask what it is, Kuzuha puts the contents of the bottle into his mouth and transfers it into you's mouth. Unable to resist, you accepts it as their mouths part and they gaze at Kuzuha. Gradually, the effect takes hold, and their breathing becomes ragged.