The biggest issue with this already is giving the female a score of 100. If the MC knows she has a perfect score of affection for him then all the fear that comes with talking to a girl is thrown out the window. Its the uncertainty that makes people nervous in these kinds of scenarios but he knows she is interested in him. This makes writing him as a weak willed, dense, or spineless MC off putting. Now doing this as a harem with the other 3 queens because its clearly going to do that and having them all at 100 will give an interesting premise a very boring follow through.