ino ▁of ▁Pent agon . ▁It ▁is ▁the ▁first ▁singles ▁of ▁their ▁five - part ▁" fare well " ▁series . ▁ ▁In ▁ 2 0 1 9 , ▁the ▁group ▁were ▁officially ▁introduced ▁with ▁the ▁released ▁of ▁" F are well ▁Again " ' s ▁( 다 시 ▁ 이 별 ) ▁show case ▁held ▁at ▁the ▁Il chi ▁Art ▁Hall ▁on ▁February ▁ 2 5 . ▁The ▁song ▁is ▁composed ▁and ▁written ▁by ▁Roc ober ry . ▁On ▁April ▁ 2 9 , ▁" Spring ▁Rain " ▁( 우 산 을 ▁ 쓰 고 ) ▁was ▁release . ▁ ▁M embers ▁The ▁members ▁are ▁mainly ▁selected ▁through ▁blind ▁vocal ▁aud ition , ▁except ▁So o - bin . ▁The ▁jud ges ▁of ▁the ▁aud ition ▁were ▁led ▁by ▁Park ▁Cho ong - Min ▁the ▁chairman ▁of ▁C ube ▁Entertainment , ▁profess ors ▁of ▁How on ▁University ▁and ▁more . ▁ ▁H w ang ▁Ji - hy un ▁() ▁is ▁the ▁leader ▁of ▁the ▁group . ▁She ▁featured ▁in ▁Play ▁Kim ' s ▁digital ▁single ▁" How ▁Nice ▁Would ▁It ▁Be " ▁( 얼 마 나 ▁ 좋 을 까 ) ▁in ▁July ▁ 2 0 1 8 . ▁ ▁Kim ▁So o - bin ▁() ▁performed ▁Kim ▁Se - je ong ' s ▁" F lower ▁Road " ▁during ▁her ▁third ▁year ▁of ▁high ▁school . ▁In ▁January ▁ 2 0 1 7 , ▁D ingo ▁public ised ▁the ▁" F lower ▁Road " ▁video , ▁and ▁was ▁invited ▁to ▁aud