There are a lot of franchises (not just video game ones) that don’t need sequels or prequels. The original works stand on their own and don’t benefit from any additional story added before or after. In fact, there are many sequels or prequels that detract from the originals.
That’s the danger that Deck Nine faces with their assignment to develop a Life is Strange prequel. The original Life is Strange was one of the best modern episodic / adventure games that created characters and a narrative with a depth and emotional resonance that the current crop of adventure games haven’t been able to match. Any follow-up has lofty expectations. Delving into the past of the first game’s most memorable character puts on added pressure.