thats exactly how I like my NTR. But one thing does not rule out the other. Also here the definition for corruption:
taken from
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1a: dishonest or illegal behavior especially by powerful people (such as government officials or police officers)
1b: inducement to wrong by improper or unlawful means (such as bribery)
1c: a departure from the original or from what is pure or correct
1d: decay, decomposition; the corruption of a carcass
I underlined those parts that are actually happening with laura in the game. Below I will argue why this game (and almost every NTR game, at least NTR of the type B and C) is indeed a corruption game. Spoiler alert!
How far this corruption process goes. - whether it will be a total slutification resulting in her getting laid by many or just the conquer of her heart by luca's large dick and physical and psychological skills - that is a whole different question! And there it seems I have the same preference as you. I like my NTR much more in the way of stealing the heart and not a slutification/gangbang scenario.
tl; dr: what you mean IMHO rather fits the term slutification and not corruption
edit: btw just have a look at the genre tags of this game. Hangover Cat himself gave this game the corruption tag