KAELIS: Seraph Protocol

KAELIS: Seraph Protocol is a story-focused science fantasy JRPG from YoshiYoshi Studio. At its center is Kaito, who becomes the Executor of Serenos Academy in the last city of Kaelis and, together with its Guardians, investigates so-called Noise anomalies.

The game combines Academy life and relationships with exploration, investigations and turn-based battles. Decisions are meant to change not only dialogue, but also relationships and the course of individual cases.

KAELIS: Seraph Protocol is currently announced for 2028. YoshiYoshi Studio has not yet named a more precise date.

On September 18, 2026, the studio launched a Kickstarter campaign and at the same time showed a new gameplay trailer featuring the core combat, relationship and Academy systems.

So far, only a PC version via Steam is confirmed. YoshiYoshi Studio has not announced any other platforms so far.

The Steam version is listed as a single-player RPG and currently supports English, Japanese, Simplified Chinese and Traditional Chinese. Japanese is currently the only fully voiced language.

Battles are turn-based, with up to four active Guardians. Characters and enemies belong to one of eight Lumina spectrums, each with its own strengths, weaknesses and reactions. If you recognize a Noise enemy's traits, you can set up the right group and unlock additional coordinated attacks through deeper relationships.

As Executor, Kaito seals defeated Noise Cores. Back at Serenos Academy, these can be analyzed and used for Lumina Discs, upgrades and developing the Guardians. The Academy is divided into Strike, Record, Harmony and Veritas.

A second focus is decisions. The Armillary Sphere turns key moments into a dice roll, whose conditions are influenced by, among other things, relationships, discoveries and earlier field decisions. In between, Kaito explores the city, holds conversations and investigates individual Noise cases.

For the current PC version, YoshiYoshi Studio lists at least Windows 10 (64-bit), a Ryzen 5 3600 or Core i5-9600K, 16 GB RAM, and a GTX 1650 with 4 GB VRAM or Radeon RX 5500 XT. Recommended are a Ryzen 5 5600X or Core i5-12400, and an RTX 2060 or Radeon RX 6600.

Both profiles require DirectX 12 and 30 GB of free storage space.