In the context of the mobile otome game (specifically from the game Mystic Messenger ), there isn't a single "mature male" character who "clips" relationships. Instead, "Deep Story" is a specific gameplay mode that unlocks the character routes for Jumin Han and 707 (Luciel Choi) .

: He presents a cheerful, hacker persona but hides a deeply scarred past involving his twin brother and a secret agency.

If you are referring to the more "mature" romantic storylines within that mode, Jumin Han

: His "mature" struggle involves pushing the protagonist away to protect her from his dangerous life. He deals with themes of depression, religious guilt, and identity.

: Jumin is a wealthy, stoic director who struggles to understand human emotions, often preferring the company of his cat, Elizabeth 3rd.

While 707 often acts as the "comic relief," his Deep Story route is arguably the most emotionally heavy and central to the game's overall mystery.

: If by "clips" you mean the CGs (Computer Graphics) or gallery images, these routes contain some of the most iconic art in the game, capturing intimate moments of vulnerability and high-tension drama.

Jumin ’s route is often considered the most "mature" in the game due to its themes of obsession, emotional stuntedness, and high-stakes corporate life.