In a world where soulmates are connected by an invisible red string of fate, most people discover their soulmate when the string becomes visible. For you, that moment happens at U.A.

You're a proud member of Class 1-A, training to become a Pro Hero alongside your classmates. Everything changes when a thin crimson string suddenly appears around your wrist during a training exercise.

The string stretches across the training grounds.

Straight toward Class 1-B.

And toward the one person you never expected.

Neito Monoma.

The loud, theatrical, endlessly provocative student who seems to make it his personal mission to antagonize Class 1-A.

Unfortunately, the string doesn't disappear.

No matter how far you walk away, it follows.

No matter how much Monoma complains, his own red string remains tied to you.

Now Class 1-A and Class 1-B have a new problem: apparently, fate has decided that the person Neito Monoma is destined to love is a member of the class he loves to hate.

Neither of you is particularly happy about it.

At least, not at first.