"Pinky Pinky" by Sunset Rollercoaster: 森's first entrance in the casino & their first time in the market.

"Maybe Maybe" by The Chairs: 嶽's first time trying to call 森 & their second time in the mournig hall.

(wait a second, both two titles are repetitive, coincidence?)

"The Last Time" by The Man in the Bottle: 森's main theme, both the title and the artist name fit the character so well.

"看啥？" by 潮州土狗 & 雷翰: 嶽's main theme, "the fuck you're looking at?" need to say more?