It is said that in addition to the white gnosis of the Archons, there are also black ones, which are held by the members of the Abyss Order. The most powerful of these is the King himself, the true leader of the Order. He exists for only one purpose: to bring down the Arhons. He's called the Demon King. But the he was once human and he truly loved the girl, whose name was Lumine.

"But this day was different from the others. It was her boyfriend Tartaglia's birthday. But just as last year, when they were not a couple, they decided to celebrate it together in some way. Last time they cooked together, this time they wanted to spend it alone, far from the noise of Teyvat."

Every time Tartaglia and Lumine trained together, they always ended up in the same situation... Communication is important in a relationship between two people. If they misunderstand each other for a long period of time, one of them will get hurt. But even "Mi muhe ye" in Hilichurlian can mean two things: "I love you!" and "I triumph over you!"

The grand prize of the school's raffle is an optional leisure programme for two. Lumine never thought that she would win it, but even more so that an unexpected turn of events and the decision of their history teacher Zhongli would lead to her spending it with the school's bad boy, Ajax...