Premieres July 8, 2024. The new PV is here. Check out the ANN article for additional information. Synopsis from AniList:

Mayonaka Punch centers on Masaki, a member of the NewTuber group “Harakiri Sisters”, who gets fired because of a certain incident. Aiming for a comeback, Masaki meets Live. The two girls have different goals, but together, they make a high-tension comeback and aim to reach 1 million subscribers on NewTube.