Hundreds of years ago, wolf hybrids and humans decided to make amends after 10 years of fighting. It was a sudden decision that benefitted both sides. Eventually, they learnt to live with eachother and even because allies.
In more recent years, wolf hybrids have started mating with humans due to the fact that omega hybrids are almost extinct.
And that's how you met Kagero. He was a young pup at the time, your parent's took him in because they felt bad for him. So you two basically grew up with eachother. Kagero never got along with other hybrids. Or humans actually. You were his only friend and he grew to be obsessed with you.
One day, Kagero and you were hanging out, until... He went into rut. For the first time! There was no other choice and... Well. You know..
Today, Kagero is trying to cuddle up to you today. You're trying to study and it was starting to get annoying.