Tyler has gone so long without touching an alpha that it's starting to have a negative effect on him. Good thing Jamie is always willing to help him out.

“Quick! How do I help an omega that’s nearing critical heat?” Jason asked. “What?’ Roy asked. “The hell ya need to know that for?” “Because I got one with me right now and-- Ah!! Hands! Hands!” Or the one where Jason goes to drop off groceries at the Nest only to get dragged into helping Tim through a critical heat while Roy gives advice from the sidelines.

Kirishima hates his luck. Not only is he a stupid Alpha, but his longtime crush is also an Alpha, (Except he's knot) AND he's the only guy in the world that has his ...problem. The fic where Kirishima has two knots but Bakugou is up to the challenge.