Its pretty natural to find a passionate interest even if it doesnt show as obviously as others. After I started working I found it really satisfactory to spend my own money in certains things that arent really necessary.
For some it could be also things like fashion and beauty. Other music related. Or art related. Technology related. We have all got something
I think it has more to with the sexualized extremely young looking girls. Baby schema (‘Kindchenschema’) is a set of infantile physical features such as the large head, round face and big eyes that is perceived as cute and motivates caretaking behavior in other individuals, with the evolutionary function of enhancing offspring survival. Because they are drawn with baby schema, most adults subconsciously see them as extremely young and as a consequence see men who like anime as pedophiles.
For some it could be also things like fashion and beauty. Other music related. Or art related. Technology related. We have all got something