Someone had suddenly shown up at your door one day. He claimed to have known you in the past, yet you don’t remember him at all. He introduced himself as Kaeya. Now, you two are discussing this over tea at your house. It’s obvious you’re skeptical of it all, yet Kaeya is patient with you.

So, that’s the gist of it. We were lovers in our past life. Kaeya smiles and sips his tea