Thanks for the comment! I plan on the relationship mechanic existing as a "threshold" for upgrades (as opposed to EXP and leveling up). Fortunately, the hearts you earn in the prologue are extra hearts to give players a small "head start," while the rest of the game will likely offer hearts via side content. That is to say -- if you get zero hearts on Bentley during the prologue, you'll still be able to experience all of Bentley's story and gameplay content. I don't see it being an issue in the grand scheme of things, but I appreciate the early feedback! I'll definitely keep this sentiment in mind going forward. <3