Interest
noun
I have an interest in the flavor... You do? Yes, I have a very deep interest in it.
As a jukugo kanji, you can guess the reading is the on'yomi kanji readings, which it is, so you should be able to read it.
俺はエロゲに全く興味が無いふりをしている。
I’m pretending that I have no interest in hentai games.