Infinite Flow: Why Pick on a Little Madman?

[Two male leads + Age gap + Main POV is the bottom + Dungeons + A mentally ill, hidden-bomb bottom & a clingy, persistent, loyal-dog top] At their first meeting, Liang Bei thinks he must have been single for too long to fall in love at first sight with a dungeon NPC. But after realizing Qiao Nian isn't an NPC but a player, he immediately starts flirting and asking him to hook up. Qiao Nian starts to hate the man's gaze glued to him. He ignores him outright, thinking he'd feel better if he could get away. But later, he discovers that the annoying man is like a dog-skin plaster, impossible to shake off no matter what... Since he can't get rid of him, he might as well take out his anger on him and use him to pass the time. He always aims his kicks at the most vulnerable spots, and lies to him without a second thought. Liang Bei takes the beatings and the lies without anger or complaint. But once he finally wins Qiao Nian over... he showers him with affection. A certain third wheel: Why provoke a crazy person? Liang Bei gives a wicked smile. "What do you think?" Qiao Nian, who accidentally overhears them, turns red to the tips of his ears and immediately hides far away. "You pervert! You're even crazier than he is!"