Here's the rewritten version with improved flow and natural phrasing while maintaining the original meaning:

Fantasy action RPG Duet Night Abyss is preparing for its second round of testing, opening sign-ups for the upcoming closed beta. Coming soon to mobile devices, this Hero Games-published title from Pan Studio previously held its first CBT back in January.
When Does Duet Night Abyss CBT2 Happen?
The recruitment window for the second closed beta runs from today (May 13th) through June 2nd. Players will experience localized versions in English, Japanese, Korean, Traditional Chinese, and Simplified Chinese. A fresh trailer has dropped alongside the CBT announcement - catch it right here.
To join this testing phase, head to the Duet Night Abyss official site and complete the application questionnaire. The developers are also running social media contests offering alternative entry methods.
What's the Gameplay Like?
Duet Night Abyss offers a strange but intriguing fusion of anime-style characters and Warframe-inspired movement mechanics. The story begins with a girl living an isolated life on an island with her closest companion and local craftsmen.
Everything changes when military forces abduct her friend and throw our heroine off a cliff. This brutal opening propels players into a dark, high-speed adventure filled with emotional moments.
Marking the final closed beta phase, this test introduces a new story chapter called "Children From the Snowfield." Players can experience the narrative through either male or female protagonists, with the option to summon two supporting characters during combat rather than switching between them constantly.
That covers all the key details about Duet Night Abyss' upcoming beta. For more mobile gaming news, check out our coverage of Super Farming Boy's global Android early access launch.
