Literally found this on twitter by chance yesterday, and what a great find this is! I wonder if I should make it a point to raise all 4 RO's relationships during the common route - will the non-LI's values be relevant later on, or should I just focus on whomever I like most?
I'm glad to hear that!! ❤️ As for the game, I'd say in the common route you should try figuring out who you like most and sticking with them. The relationship points are very small for the common route, as the max you can get is 10, so you won't have any drawbacks befriending the other (non-)LIs once you've picked your route!