is a Japanese role-playing game developed by ShiBoo and released on January 30, 2025 . Identified by the product ID RJ01320589 , this title blends elements of fantasy, transformation, and gender-swap (TS) themes within a narrative-driven RPG structure. Plot and Setting
The game is recognized for its niche appeal within the and Gender-swap RPG community. Reviewers and users often highlight ShiBoo's specific art style and the narrative focus on the protagonist's vulnerability and subsequent adaptation to their new form. Seitenshi Crossnia Heart -RJ01320589-
Seitenshi Crossnia Heart -rj01320589- File - Prime Modern River is a Japanese role-playing game developed by ShiBoo
: Central to the experience is the protagonist's transformation, a common trope in ShiBoo’s catalog that focuses on the physical and psychological shifts of the main character. Reviewers and users often highlight ShiBoo's specific art
: The official product page for Seitenshi Crossnia Heart (RJ01320589) hosts the game for its target 18+ audience.
: The game features character designs that emphasize a "cute" aesthetic, contrasting with the clinical and often high-stakes nature of the laboratory setting. Availability and Distribution