Moonlit Serenity

The cover features a dark blue background with a touch of mystery. At the top, the title "Underground" is written in a mysterious font, creating intrigue. In the center, there are three people depicted - a guy with blonde hair, a guy with brunette hair and slight facial hair, and a girl with blonde hair and hazel eyes. Both guys are looking at her, while she looks straight ahead, emphasizing the complex dynamics between the characters.