Following the previous four volumes, Lantis has posted a four-minute preview for “RED GEM WINK” performed by Ruby Kurosawa (CV: Ai Furihata) and “WHITE FIRST LOVE” by her older sister Dia (Arisa Komiya), two newly-recorded bonus songs to be included in the special limited edition set of the upcoming fifth Blu-ray volume of the TV anime Love Live! Sunshine!! second season.