Eojjeomyeon Romantic!

Bodyguard Matthew, who is raising his daughter Rachel alone after divorcing his husband. Unable to resist his daughter's urge, he goes to work at a cruise party where famous painter Eden appears. Matthew is drawn to Eden's active skinship, who resembles his first love but is more muscular and shiny, and ends up spending a night with him. Their meeting, which he thought would end lightly, continues on land. Meanwhile, Eden discovers traces of his dead sister in Matthew and tries to keep Matthew by his side and watch over him...

(Source: Lezhin, translated)