Strange as it may seem, many KPOP superstars are somewhat accustomed to receiving fan letters written in blood (yes, blood.) Usually, they're intended to show some sort of obviously extreme love or devotion to a group or individual performer. Yoona, of Girls Generation, however, recently received a blood letter of a markedly different intonation.

Yoona, who is scheduled to appear on the upcoming show 'Family Outing Season 2,' recently received a sanguinary letter that scrawled out the ominous warning, "Yoona, don't do Family." As PopSeoul reports, though, some are questioning the authenticity of the letter, as many have pointed out that the so called "blood" looks just a bit too Halloween-ish to be real. Still, authorities are looking for the person responsible, and will ensure that Yoona's safety is in no way compromised.

Until recently, Horvejkul Nichan was probably best known as the older brother of 2PM's Nichkhun. That's starting to change, though, as big brother has begun to garner quite a fan following in his own right, especially in their homeland of Thailand. After making a well received appearance in Ploy's video for their 'Dream On' single, Nichan has now released a second music video, as AllKPOP reports. This time, he's teamed up with KPOP's KongJak, for his single 'Want to Buy Time.' Check out his big debut after the break.

After teasing KPOP fans with a short trailer for their collaborative video, f(x) and M.I.C. have finally released the full version for their single 'Lollipop.' The video, as expected, is bright and bubbly, even if hearing the girls singing in Chinese might seem a bit strange for fans accustomed to the famous Korean pop songs. Check out the video after the break, and see what you think.

ZE:A (Children of Empire) is the newest KPOP boy band to bust out on to the scene, and though they've been performing throughout Korea for a little while now, last night may have been their official coming out party. The 9-member band held their own "showcase" performance in Seoul, yesterday, and, as AllKPOP reports, they definitely didn't disappoint fans. The group ran through their hit track 'Mazeltov,' as well as 'Love Coach' and 'New Star.' Their label, Star Empire, said in a statement: "In order to show off the skills they have built up from their training days, all 9 members have been practicing all day long and spilling sweat." Judging from the glowing critical and popular reactions, it seems like the effort was well worth it. Watch their performance after the jump.