The official website for the Helck anime has announced that the series is scheduled to premiere in Japan on July 11, 2023. It was also stated that the anime will air for two consecutive cours for a half-year run. HIDIVE had previously announced that it would be simulcasting the series as it airs in Japan.

Helck is described as:

Three months have passed since the Demon Lord was struck down, and the Demon Realm is holding a tournament to select his replacement. The leading contestant is Helck, a human hero who claims to hate his own kind. Some aren’t happy with the idea of a human becoming the next Demon Lord—especially Vermilio the Red. She wants nothing more than to protect demonkind and prove Helck to be their enemy, even if she has to rig the competition to do it.

Source: ANN