Lee Su-hyun of sibling duo AKMU opened up about going through a slump and expressed gratitude to her brother and band member, Lee Chan-hyuk, for helping her through it. The duo appeared on “You Quiz on the Block” on Wednesday. When host Yoo Jae-suk asked how the siblings were doing living under the same roof, Lee Chan-hyuk said he had been the one to suggest they live together. “Su-hyun was having a hard time living alone because she wasn’t used to it,” he said. Lee Su-hyun said her slump initially came from work, but as she endured the emotional strain, she began to have deeper doubts about life itself. “That question first hit me after my brother left for his mandatory military service. What kind of person would I be without him? His absence made me realize just how big his presence had been. I ended up feeling disappointed in myself, and hurt.” She said she waited for Chan-hyuk to return from military service, but when he did, he charged ahead like a racehorse, focused only on what was in front of him. At some point, working with him began to feel dull. “I told him that