Ishizaki Huwie and Suda Masaki will digitally release their collaboration song "Ai mo Kawarazu" on August 2 under the name 'Ishizaki Huwie×Suda Masaki.'

On July 25, Ishizaki held an anniversary live at Tokyo's LIQUIDROOM celebrating ten years since his major debut. Suda came to join in on the celebration, and they performed "Sayonara Elegy" and "Niji" together. Moreover, they excited fans by performing "Ai mo Kawarazu," which is their first collaboration on an original song, ahead of its release.