It's been 20 years since Taehyung transmigrated into a child-rearing fantasy novel. Now that he's finally about to marry off his precious daughter karina to the original male lead, he's ready to retire and enjoy his second life in peace. But an unexpected problem appears- "Honestly, I wasn't going to say this because you're Karina's father, but..." "...?" "I'm not interested in you, Duke." The problem? The second male lead himself---Jeon Jungkook. Knowing all too well that Jungkook's personality is highly questionable, Taehyung tries to remove him from his daughter's life. Yet before he realizes it, everyone starts thinking he's just a creepy old man chasing after a guy 20 years younger than him. To clean up the misunderstanding, he promises to stay away from Jungkook for good. "Thank you for the apology. I suppose this will be our final goodbye. Farewell." "...What? Final? What do you mean 'final'?!" But strangely enough, Jungkook starts seeking Taehyung out even more obsessively than before. Dear Second Male Lead, why are you doing this to me, not my daughter...?

Wherein Jeon Yeonjun gets into problems at school and Principal Kim Taehyung summons Jeon Jungkook