On KBS 2TV's "Men Who Do Housework Season 2" (hereinafter "Men Who Do Housework"), siblings Park Seo-jin and his sister engage in a fandom war. In the episode airing on the 15th, Park Seo-jin and his younger sister Hyo-jung compete fiercely over their pride. Hyo-jung decorates the living room with cheering placards and fan letters bearing her name, creating a "self-esteem zone" and showing off her fan pride.

Seeing Hyo-jung's actions, Park Seo-jin challenges her by saying, "Did you pay to make this?" Then, he takes out his own fan letters, revealing his skill as a "master teaser." Park Seo-jin says, "Try making a fan cafe and holding a fan meeting. You have to prove if it's really from a fan," throwing down the gauntlet to Hyo-jung's fandom.

In response, Hyo-jung founds her fan club "Ddungbyeol" and opens a fan cafe. She prepares a special return gift called "Kimjang Kimchi" for the fans attending the fan meeting, showing her exceptional love for her fans.

Park Seo-jin ranks second in the fan cafe fandom rankings, following Lim Young-woong. Watching Hyo-jung, he recalls the early days 13 years ago when he personally opened a fan cafe. Park Seo-jin looks through fan cafe posts, reflecting on the past, and reveals hidden stories from long ago that bring laughter.

Additionally, Park Seo-jin reminisces about his first fan meeting with 20 to 30 fans and mentions the current "Datbyeol" fan club, which has over 66,000 members. During this, he becomes emotional and his eyes well up with tears. Curiosity grows about the reason behind Park Seo-jin's tears.

KBS 2TV's "Men Who Do Housework" airs at 10:35 PM that day. This episode emphasizes family bonds and communication with fans through the fandom war between Park Seo-jin and his sister. It is an important episode showing how relationships with fans develop.