VOISPER confessed their love on the January 20 installment of 'Immortal Song'.

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For the 'Rising Stars' special, VOISPER covered Shin Hyo Bum's 1993 hit track "You Are the One I Love". The members expressed, "We want to create a satisfying performance and take the title of '2018 Super Rookies'."�

Their competitor Min Woo Hyuk�commented, "I realized how beautiful their four voices are."

VOISPER were able to win one round, but it was Kim Yong Jin�who took the final win.