After topping Korea's official Gaon chart last week with the ballad "No More," boy band B2ST have done it again with their latest single "Good Luck." The song enters at No. 1, while "No More" takes a tumble down to No. 10. It's the first time that B2ST's ever yielded more than one No. 1 from an album, with "I Knew It" from 2012's Midnight Sun serving as their only other chart-topper to date.

Coming in second place is Maroon 5's "Maps," which is quite surprising given Korea's insular music industry.

Taeyang's "Eyes, Nose, Lips" slips to No. 4, while Bumkey's new digital single "Home" arrives at No. 5. Meanwhile, Davichi's "Pillow" debuts at No. 11, but could still rise higher next week like their previous single "Again" did.

Rising girl group AOA land their second top twenty entry with "Short Hair," which debuts at No. 14. The song is currently performing well on Korea's main real-time digital charts, so expect it to rise next week -- it could even become the group's first top ten hit.

Further down, we've got some older singles showing a lot of staying power: Hyosung's "Good-Night Kiss" is at No. 21 despite promotions for the song officially ending last weekend, while A Pink's three-month-old "Mr. Chu" is still in the top forty at No. 35.

Check out this week's key K-pop hits below!

No. 1. B2ST - Good Luck

No. 4. Bumkey - Home

No. 11. Davichi - Pillow

No. 14. AOA - Short Hair

No. 53. MAMAMOO - Mr. Ambiguous

As expected, Taeyang has totally taken over the charts with his second solo album, Rise. Lead single 'Eyes, Nose, Lips' takes the top spot this week, giving the BIGBANG star the sixth solo No. 1 of his career. Further down, "Stay With Me" featuring G-Dragon debuts at No. 7, while the majority of the album's other tracks debuted somewhere in the top 25.

The other big new entry of the week goes to Davichi, whose new Brave Brothers' ballad "Again" arrives at No. 5. Unfortunately, by Davichi standards, No. 5 isn't all that great -- in fact, it's the vocal duo's lowest-position for a single since 2010's "Separating Twice."

Elsewhere, R&B singer Crush debuts at No. 16 with the Gaeko-assisted "Hug Me," while VIXX's "Eternity" slips ten spots to No. 17. One spot lower is SECRET's Hyosung, who remains in the top twenty for another week with "Good-night Kiss."

B.A.P's new digital single "Where Are You? What Are You Doing?" comes in at No. 27, while struggling boy band ZE:A continue to flop as their comeback single "Breathe" limps in at No. 34.

G.NA and T-ara's Jiyeon continue to struggle with their latest singles, with Jiyeon's "1min1sec" falling to No. 39, followed by G.NA's "Pretty Lingerie" at No. 46.

Speaking of struggling, 15&'s "Sugar" slips 36 spots to No. 53 in just its second week, cementing "Sugar" as a certified flop for the JYP vocal duo.

Check out this week's new K-pop hits below.

No. 1. Taeyang - Eyes, Nose, Lips

No. 5. Davichi - Again

No. 16. Crush - Hug Me

No. 27. B.A.P - Where Are You? What Are You Doing?

No. 34. ZE:A - Breathe

There's a new No. 1 song on the K-pop charts this week, with Gary (from hip-hop duo LeeSsang) and Jung In's new duet "Your Scent" sliding straight into the top spot. The song already achieved an all-kill on the real-time digital charts last week, which might have something to do with the fact that it's produced by hitmaker-of-the-moment Duble Sidekick.

Last week's No. 1, Fly To The Sky's "You You You," falls to second place, while IU remains strong with "My Old Story" at No. 3 and "The Meaning of You" at No. 4.

Ballad queen Baek Ji Young debuts at No. 5 with "Still In Love," which is actually one of the weaker chart positions she's held in recent years.

Meanwhile, boy band VIXX debuts at No. 7 with "Eternity," making it the second top ten hit of their career thus far. The group's previous best was last year's "Voodoo Doll," which also peaked at No. 7.

One spot lower at No. 8 is INFINITE with "Last Romeo," while Yuna Kim's "Without You Now" rockets 32 spots to No. 9.

For girl group soloists, SECRET's Hyosung continues to do well with "Good-night Kiss," which actually climbs one spot this week to No. 13. Unfortunately, the same can't be said for T-ara's Jiyeon, who drops 10 spots to No. 27 with the moody "1min1sec."

Last but not least, JYP vocal duo 15& debuts at No. 17 with their sassy new single "Sugar," which by their standards is actually quite poor. It's the first time that they've missed the top ten, and with the song already down to No. 70 on the Melon real-time chart, there's little to no chance of it improving next week.

Check out this week's key K-pop hits below.

No. 1. Gary & Jung In - Your Scent

No. 5. Baek Ji Young - Still In Love

No. 7. VIXX - Eternity

No. 13. Hyosung - Good-night Kiss

No. 17. 15& - Sugar