In the past Ido brother raped him first. This sexual encounter didn't happen in the past at this time. Ido came back early because he knows Sejin was asked by his father to steal information from Ido's company. I feel like the staff probably told Ido that Sejin was in heat.
@UOYKCUF I'm not bothered by it, i'm just saying you chose to read the spoiler so there is no necessity in insinuating someone ruined your day with it.. Just my opinion though. Have a nice day !! Also mb if this seems passive aggressive I'm not the best at expressing my intentions within the statements I make🫶