Byul wished her husband HaHa a happy birthday through her Twitter.�

She posted a heartfelt message dedicated exclusively for HaHa, "Today is a very special day. Today is the birthday of the person I care about and love the most in this world. I want to cook him seaweed soup, light candles, have a cake, and sing for him. But unfortunately I just left for my 2 Days & 1 Night schedule."

She continued, "He lives his life more passionately than anyone I know. Every time I see this side of him I think it's so beautiful. Please show lots of support and�congratulate�him. Give us strength! Dream Appa Happy Birthday"

Meanwhile, HaHa is actively working on various music activities with artist Skull.