A Single's Inferno 4 contestant has been accused of having "red flag" natures in a now-viral TikTok video that has ignited speculation and controversy behind the scenes of the popular reality show.

Originally posted by a user named Chintanas, the video soon went viral after claiming intimate moments with an unnamed male contestant, which many fans speculated could be Theo Jang or Jun Seo.

A bold text in the video appears as "When one of your most red flag in Seoul is in the new season of Single Inferno."

As per Koreaboo, one of the claims made by the TikTok user included an interaction with the contestant at a club in Itaewon. She said they strolled for hours before going to a hotel room and making out. The contestant then later went on to block the user on social media, the user reported.

The fans and the followers of the show reacted immediately. The original poster was slammed by many for speaking about that story when the current season of Single's Inferno was at its peak in popularity and held responsible for such an 'attention-seeking' act.

The TikTok user subsequently revealed how she never expected anything bad to come out of the video — explaining she only wanted to share a funny story — and she thus deleted it (but apparently, the video remains uploaded on her TikTok account, already generating 1.6 million views as of this writing).

This incident has further added to the intrigue around Single's Inferno, which continues to entertain viewers.

Fans eager to find out personal stories and interactions often place contestants under heavy scrutiny.

There has been no response from Single's Inferno reps yet. Until then, fans can sit back and watch as the dramatic series approaches its exciting finale.