Yamaguchi's afraid of thunders; Tsukishima's worried over some timid boy with freckles everywhere. (Based on Nikoru-senpai's headcanon on tumblr).

Yamaguchi is staying with Tsukishima. Once he falls asleep, horrible things happen. Tsukishima x Yamaguchi (Tsukkiyama) Warning: Copious amounts of fluff, angst boyxboy, and some disturbing things. Don't like? Don't read. Picture by: zombiezeemo on Tumblr. I do not own Haikyuu!

(Soulmate AU where you and your soulmate share pain both mentally and physically) Tsukki has know that Yamaguchi was his soulmate since middle school but he didn't know how to tell him so he just didn't. One night Yamaguchi starts to break down and hurt himself and the rest you have to read to find out.