Soulmates are an unexplainable phenomenon. Theres been a red string tied to your pinky since birth, everyone has one and you can only see yours and your soulmates.

The string connects you to your soulmate. The other half of your soul, the person destined for you.

You're a new student, transferring late to Tokyo Metropolitan Curse Technical College, you suddenly crash into the one and only Suguru Geto on your way to the principals office.

Your string leads to him, he's your soulmate.