HEARTSTEEL comeback concepts and music video footage leak online

The leaked materials include early character concepts and 3D models featuring redesigned outfits for several members of HEARTSTEEL. The visual direction uses new hairstyles, clothing, and accessories while retaining the contemporary music-group theme of the original skin line. Separate concept art also shows additional outfit variations that may have been created during development. It is not yet clear which versions represent final in-game skins and which are earlier production concepts.

Previous material attributed to leaker CNPeterLee indicated that the 2026 HEARTSTEEL lineup would again include Aphelios, Ezreal, Kayn, K'Sante, Sett, and Yone. Those leaks appeared alongside material related to the expected return of K/DA during League of Legends Season 3. The latest materials were circulated through the "leakscartoonss" Telegram channel, while Riot Games have not officially announced the return.

The newer leak also contains a frame from a video showing a location with a HEARTSTEEL sign, along with an audio fragment reportedly taken from the same project. Additional discussion around the leak indicates that more footage from the possible music video has circulated online. No official song title, release date, or performing artists have been confirmed.

HEARTSTEEL debuted in 2023 with PARANOIA, featuring BAEKHYUN, tobi lou, ØZI, and Cal Scruby. Riot Games released skins for all six members alongside the project, with the original lineup consisting of Kayn, Ezreal, Sett, Yone, K'Sante, and Aphelios. Riot have not released another HEARTSTEEL single since the debut project.

The leaked concepts and video material have not been confirmed by Riot Games, meaning the designs and other details may still change before a potential release.