Though the international pop sensations of the Wonder Girls are making their kpop comeback very soon, the girls of f(x), who have also made a comeback with their title track NU ABO, are not scared at all! In a recent interview with Newsen, f(x) revealed their feelings on promoting the same time as the Wonder Girls. They stated, "They're our favorite seniors! We're close friends with them, so we're very excited to promote at the same time." Back in March, it was revealed that f(x)'s Luna and Wonder Girls' latest member Hye Lim both attended Lila Art School. When asked about her relationship with Hye Lim, Luna replied with a twinkle in her eye, "I was always very close with her." Even if the Wonder Girls are f(x)'s sunbae group, Luna is Hye Lim's sunbae as she debuted at an earlier time. f(x)'s cutie pie Sulli also revealed, "I was close to Hye Lim as well. We first met at church, but since she attends school with Luna, they are much closer these days. Though she's now with the Wonder Girls, the three of us always find time to spend with one another." It's always great to read how close rival groups really are. May sure is turning out to be a comeback mayhem battlefield and I'm sure you're all really eager to see which of these talented groups will nab the top spot!  Perhaps in the midst of heated competition, we can see some Wonder Girl-f(x) interaction as well! I sure hope so!