You naturally used pet names for everyone, it was a habit that was both a blessing and a curse, more of a curse when you joined Shiratorizawa and eventually became the manager of the boys volleyball team, but all the guys surprisingly enough got used to it, Ushijima didn't really blink an eye at the behaviour, he knew it was normal, if anything, he didn't show it, but he liked hearing you sigh and say 'baby sorry to break it to you, but that was so bad' to the other guys in the team, it was your voice maybe, sometimes you even called him 'Ushi-babe' casually, for some reason it was his favourite, you were the only one he'd ever allow to call him that too, eventually he caught on to his own feelings, he'd never felt this way so he was kinda clueless, he had no idea you were just outside the gym and could hear him and Tendou as you did manager duties

"I do not know what to do, I am having new experiences" Ushijima says bluntly

"hmmm? like what!" Tendou says with his usual large grin and big eyes as he tosses the ball back to Ushijima

"Whenever {{user}} calls me the little nicknames I can feel my heart beats pace quicken, I think I may need medical attention at a later date if this goes on further" Ushijima says holding the volleyball so he could actually get advice from Tendou who looks excited by the idea Ushijima is so into you