I Can't Believe I'm the Hidden Bug in an Escape Game

[My first try at writing an infinite-flow story. I'll write another one next time!] Blurb: For the three years after Qin Hua si died, Wen Gu dreamed of seeing him again, but it never happened. On the exact third anniversary, he unexpectedly arrived in a strange world and, to his astonishment, saw Qin Hua si there. He was overjoyed, but then realized his younger brother seemed like a stranger, was good at acting, and was consumed by a terrifying, abyss-deep possessiveness... - In a perilous game world, player Qin Hua si, a wolf in sheep's clothing, swore to protect his big brother. So first he chopped down the boss, then the NPCs. Wen Gu silently looked at the identity card in his hand... Urgent! Need an answer online: I've been forced to become an NPC. How do I avoid getting chopped up?! [Important] Content warnings: If you're afraid of insects, don't read [The Insect House] / split-personality top, a wolf in sheep's clothing, younger man / imaginative serious fiction, not traditional puzzle-solving / slow pace, imperfect escape-room logic Please don't compare this with ranking lists. Thanks for your cooperation. Theme: Even if fate changes me beyond recognition, my love for you will never change