The Heart Killers (2024)

Both The Heart Killers and Long Time No See are centered around a hitman based storyline that also includes BL or Gay Romance.

The Heart Killers is a Thai series.
Long Time No See is a South Korean film.

Both are Thai BL Drama Series that have a gangster vibe to them. In The Heart Killers, it is about a pair of hitmen brothers and a police spy and his mechanic friend. In Jack & Joker, it is about an ex-convict / thief and an enforcer for the mafia.