HI-FI UN!CORN (also referred to as HFU and HAPAYU) is a 5-piece band under FNC Japan consisting of members Kim Hyunyul (Gt.), Son Kiyoon (Ba.), Um Taemin (Vo.), Fukushima Shuto (Vo.) and Heo Min (Dr.). The group was formed by CNBLUE through the survival show The Idol Band: Boy's Battle. Their debut was on June 26th, 2023 with the release of Over the Rainbow. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.