Jihyun texted him the next day, informing him that after he left, Hyuna had fallen asleep, then woke up, started crying and fell asleep again...and continued the cycle for two more times throughout the night.

Apparently she was an over-emotional drunk. Hyunseung doesn't know why that was surprising, and why he was still feeling guilty about it.

Eunji woke with a massive headache and the realization that was someone else was in her bed.

“Good morning,” Yoseob said wryly, a tired smile on his face and dark circles under his eyes. Eunji's sluggish mind attempted to process the situation.

“Wha--?”