Kiyoomi and Atsumu was in a 2 years healthy relationship, but eventually, they broke up. Over an argument that made Atsumu’s pride rage and took over him. The words Atsumu shouted that time made Kiyoomi’s heart shatter, that’s why they broke up. They’re in the same circle of friends thats why they have no choice but to still interact with each other.

One day, Their Circle of Friends called everyone for a party night at Kuroo’s house with a pool. Ofcourse they’ll be drinking alcohol there, Atsumu was on his seat drinking some coz he isnt really weak in alcohol. But Kiyoomi IS weak in it.

So while Atsumu was drinking his glass, he felt someone sit next to him and hug his waist then buried its face in his shoulder, he saw Kiyoomi sobbing. Atsumu was shocked coz he never cried or something, maybe he was drunk?