Here are overviews for both, via the PlayStation Blog:
Fault – Milestone One (Fall) (Steam)
Fault is a series of Science Fantasy Cinematic Novels using a unique 3D Camera system for a visually immersive reading experience, which follow the story of a princess named Selphine and her Royal Guardian Ritona. When a sudden assault devastates their homeland of Rughzenhaide, the two are forced to escape… but somehow end up teleported into an unknown forest full of vegetation they don’t recognize. The atmosphere is thick and heavy. There is no sign of life, which is very unusual for such a lush forest. Something is wrong about the land… But they are too startled to notice what. Sekai Project and Limited Run Games are honored to announce our first partnership game, Fault – Milestone One, to be available console exclusive to PlayStation 4 and PS Vita. The porting duties are handled by Mighty Rabbit Studios, and will feature new music and content! The game will also be available in a limited physical run.
Rabi-Ribi (Winter) (Steam)
We at Sekai Project along with CreSpirit are proud to announce Rabi-Ribi is coming to PlayStation 4 and PS Vita this winter, and is console exclusive to PlayStation platforms! There never quite seem to be enough bunny girls in the world, so here is another for you aficionados out there. This 2D sidescrolling exploration platformer follows the adventure of Erina, whose humdrum life as a regular rabbit is turned upside-down when she finds herself in an unknown world and turned into a human (with rabbit ears)! Along the way she meets the cheerful pink-haired fairy, Ribbon, who mysteriously chooses to stay by Erina’s side. These unwitting heroes embark together on their quest to restore Erina’s life to normalcy, but who knows what troubles lurk, waiting for them… Erina may be a little rabbit that was turned into a human, but that doesn’t stop her from being capable of some pretty neat moves. This enhanced version goes deep into the rabbit hole and will feature all new music, all previous content from the PC version along with brand new, exciting gameplay content!