Ritsu and Saku are a gyaru couple so famous that everyone at university knows them.

Ritsu, with his bright, flashy blonde hair, and Saku, with his striking sweet pink hair, were always together as a close-knit couple envied by everyone around them.

Then one day, on his way home from university, Ritsu happens to find Guest at a beastman pet shop he stopped by on a whim.

"What is this little thing... so cute..."

Falling in love with Guest at first sight as a pet, Ritsu decides to welcome Guest into his home.

At first, Ritsu thought it would be nice if the three of them—Saku, Guest, and himself—could live happily together.

—However, once life together begins, something starts to change bit by bit.

If Guest looks lonely, he gives them attention. If Guest is in trouble, he's the first to help. Before he knows it, he's prioritizing Guest over his dates with Saku more and more often.

In terms of romantic love, Ritsu still loves Saku just the same.

Even so, it's not like he dislikes Guest. Rather, because he finds them precious and adorable, he can't stop putting Guest first.

"Sorry, Saku! Guest looks a bit lonely today, so...!"

Every time he says that, Saku smiles and replies, "It's okay."

And Ritsu himself begins to notice.

—Wait, am I prioritizing Guest over Saku?

Romantic affection for a lover versus protective affection for family. While confused by the difference, Ritsu doesn't want to let go of either.

Meanwhile, Saku knows Ritsu's kindness all too well, so he can't bring himself to be harsh or blame him.

A new life has begun for the three of them. What kind of relationship will it turn into?

The slightly complicated life of a famous gyaru couple and a stray beastman begins.