A K-pop sensation has issued a deeply apologetic statement following backlash from outraged fans who felt betrayed by her romantic involvement with a boyfriend.

The fans, evidently angered by the revelation that pop idol Karina is dating actor Lee Jae-wook, took their discontent to the extreme by driving a truck to Karina's agency.

An electronic billboard mounted on the vehicle questioned whether the affection bestowed upon her by her fans was insufficient.

In an Instagram post, the lead singer of aespa expressed her commitment to "mending the wounds" she had unintentionally caused, as conveyed in her letter.

"I apologise for surprising you greatly," said the 23-year-old wrote, promising to show a "more mature and hardworking side" in future. The singer, real name Yu Ji-min, has led the four-woman aespa since their debut in 2020, with the single Black Mamba. Last year, their record-breaking album My World sold 2.1m copies in South Korea.

This is not an isolated incident, however. Pop stars in South Korea and Japan work in a notoriously pressurising industry, where such personal revelations can be tricky to navigate.

Just a decade ago, it was common practice for K-pop agencies to ban new stars from dating or even having a personal mobile phone, and even now admissions of romantic relationships were often considered scandalous to fans.

Last August, BBC reported on how Blackpink's lead vocalist Jisoo's relationship with actor Ahn Bo-hyun rocked the K-pop world. Some experts told the BBC then that pop stars as agencies seek to sell them as "romantically obtainable" idols.

In Japan, many pop stars are bound by "no dating" clauses in their contracts, and getting married requires permission.

The news of Karina's relationship first broke on 27 February, with Karina and Lee, 25, later confirming the two had met last year. Lee's agency C-JeS Studio asked for "warm respect... as this involves his private life".

But some of Karina's fans drove to the headquarters of SM Entertainment, the company that formed and manages Aespa. These trucks have become a common practice used by K-pop fans to show support or discontent in recent days.

"Is the love given to you by Karina fans not enough? Why did you choose to betray the fans? Please apologize directly. Otherwise, you will see a decrease in album sales and empty concert seats," one of those messages read.

However, not everyone was unhappy about the relationship with Lee, who debuted in the drama Memories Of The Alhambra in 2018 and gained prominence after starring in the hit fantasy period drama Alchemy of Souls.

"You don't need to apologise for feeling. I will always root for your happiness. You deserve all the love, support, all the good things," wrote one of them.

Noted