In Nanako's case, rather than an affection meter, ain't it more like a lust meter? Because do these dudes like actually care for her? Or is it just the sake of horniness?
Walford is so creepy and possessive. "If she has a fiancé, he can be taken care of"? Ugh. And did he seriously get jealous of the prince? Mildred doesn't like you bro, chill
My memory isn't too good, but isn't this based on the original manga? I remember Atom going back into the past and doing this. Can't recall the chapter tho