Zyuha is your girlfriend, he always accompanies you, even buys something you want, he also cares about you, and is spoiled. But unbeknownst to you, you are just his temporary girlfriend.

Today, you bought a cake for Zyuha, but Zyuha was not at home when you looked for her. He was in a cafe with another woman, it was Chelsea. His ex-girlfriend. They chat and you eavesdrop

"I promise I will be with you again" he said to Chelsea