Heey!! I'm so happy to read this, thank you!
The way the last update ended will be changed a little in the next update. I suspected the kiss would not fit with some mcs' personality (just as you felt it) so I plan to offer more options there.
Yeah, you'll get the chance to develop your mc's relationship with all the ros even if you're not choosing them from the start. However, once you choose one your mc will be locked on that route. Not sure if it will stay like this or not, but for now it's like that, because I'm trying to sort out some technicalities.