The Endless Train Game

Su Yue opened his eyes to find himself trapped aboard a death train that would never stop.

Five carriages, fifty passengers. Each carriage held a carefully designed game with deadly stakes.

The rule was to survive. The price was to wager your life.

"Mr. Su, welcome to the Train Game."

A top who can't stay serious for more than three seconds × a bottom who seems sweet and innocent but is secretly cunning and loves to act cute

"I'm the little brother of Su Yue, and his alone."

"I like you as more than just a little brother likes his older brother."

"I feel the same."

Pei Yi squeezed Su Yue's pinky. He knew Su Yue wouldn't understand what it meant, much less accept him, but it was enough that he knew.

Su Yue patted his hand and said, "We'll always be good friends."

Pei Yi knew that he understood how he felt.

Main pairing:

BL + pseudo-incest + older top

Su Yue × Lin Yishui (P.S. They are both sexually inexperienced!!!)

Secondary pairing:

GL + older top

Qin Wanxi × He Nan (P.S. They are both sexually inexperienced too!!!)

[Infinite-flow + pure love + high-IQ characters + mystery and deduction + happy ending]

Content warnings:

The romance develops at a slow pace overall, but the levels can pass quickly or slowly.

The author's writing is quite average, and the story is carried purely by their love for the protagonists. Most of the levels are adapted from urban legends, folk horror stories, and similar tales.

The author may sometimes interrupt important parts of the story with mysterious ramblings. If you find that too sweet, or don't like it, stop reading. Don't read it, get upset, and then come back to scold the author.

One last important point:

Please don't be hostile toward the characters.

Theme: If everyone dies, that still counts as a happy ending.