Yes also the game has too many LIs imo. If you're making a Harem fuck em' all no brainer that's fine, the more the merrier but if you're writing entire updates for a single LI better work fast.
Updates are never written for just a certain girl. This is not a dating sim.
Every chapter has a certain goal to achieve (story-wise.) and it just happens that this updates' goal has to do with Bella.
About the too many LI's and the risk it brings.
I agree that this can be a problem for devs that don't plan into the future and just "Go with the flow", which is totally okay but you run a high risk of navigating yourself into a corner and you end up with Girl X, Y and C having all the content and the others are being left out because you ended up writing the narrative around X, Y and C.
I made sure that this doesn't happen by putting myself into the place of, for example, Nadia and imagining that she is the MC and I started writing her Life-story, desires, and "secret goals" she has in SG from her perspective.
I wrote entire scenes in my notebooks just from her perspective, I noted her thoughts, her feelings, etc.
In the end, every single main character has been written through the eyes and with the depth of a MC.
That's why I always say, the girls in this game do not exist just for the player. They all have their own internal story, desires, and goals.