Crystal Palace from Infinite Anime

BOOKLABEL: Harem, Games, Anime, Anime Theme Writing Competition
LNTRODUCTION: Traveling through the infinite world, Lin Zhiyu discovered that his teammates seemed very extraordinary. Some of them were actually from anime or games he had watched and played!
The heroic Saeko Busujima, the glamorous and charming Kim Mi-jeong, the gentle yet strong Laura, the enchanting Evelyn...
What? They had no idea about the dungeon I was about to enter with my team?
Lin Zhiyu: "Fortunately, I have a lot of experience. Things like Taimanin and Iron Witch are completely familiar to me!"