Tangled fates (young avengers of story)

Got it! Here's a revised description that reflects their backstory:

Title: Unlikely Heroes

Mattia and Lucas have been inseparable since middle school. After a series of strange, life-altering events in their freshman year of high school, both discovered they had powers-Mattia with the ability to manipulate blood, and Lucas with earth manipulation. They each kept their newfound abilities a secret until one day, the truth came out. Instead of pulling away, they grew closer, realizing their powers could make a difference in the world.

When the Young Avengers track them down for recruitment, Mattia and Lucas are hesitant to join a team. They're used to doing things their way and have no intention of being bossed around. But with their connection and undeniable strength as a duo, they may have no choice but to decide whether they're ready to become part of something bigger-or if their friendship is all they need.