In which Tendou writes letters that are addressed to Ushijima but never sends them. [short story]

"Wakatoshi-kun I have a girlfriend." "*I wish I could've tell you sooner* Oh that's great" "You don't look so good Wakatoshi-kun,are you okay???" "Yeah I'm fine Tendou" "*Something isn't right about Wakatoshi-kun*" "Goodbye Tendou I have to go now" "*Something is really isn't right about Wakatoshi-kun*" (Tendou found himself a girlfriend but Ushijima has feelings for but it was to late he didn't tell him sonner,Will they ever be friends or will Ushijima will break their friendship.)