[Synopsis] The mage Sipleins discovers he’s just a stand-in lover—his boyfriend’s true love is someone else. So, he breaks up decisively, ready to spend the rest of his life devoted to knowledge. But then, an unexpected twist— "Thanks to the scumbag, I’m now dating your white moonlight." Two mages with identical worldviews, similar hobbies, and aligned academic opinions—practically mirror images of each other, both dubbed "time travelers from a legendary era" and "electronic device nemeses" by their apprentices—find their unlikely pairing perfectly logical. Note: The author just wants to write a sweet, fluffy, slice-of-life story with no tight plotting—mwah! The CP is mutual pining with the white moonlight, and who tops/bottoms depends on their mood that day. That scumbag ex got relentlessly bombarded with PDA and is now suffering internally. Goliath & Xuefeng’s story: "A Dragon Knight’s Daily Training Log" The apprentice’s story: "The Greatest Mage in the Galaxy" Reading Guide: 1. The magical continent has entered a modern (even futuristic) tech era, so don’t be shocked seeing mages use phones—though our protagonist can’t even handle a basic flip phone... 2. The scumbag ex has zero chance of reconciliation, no worries. 3. Thanks to all classic Western fantasy works for intellectual inspiration—elements used are well-known tropes, but the specific worldbuilding and magic systems are entirely made-up, especially regarding magical tech. Please don’t scrutinize it with logic because it’s wildly unscientific (serious). 4. If you’ve read other works in this series, this shares the same universe but is set nearly 6,000 years after "Hymn," so familiar characters might appear only in obscure Easter eggs. 5. The author loves angst and fluff equally.