I think your parents would like my taste in anime just like Spacebattles do.Something that won’t get my parents to ask “what are you watching?” when they walk into the living room. Basically something that doesn’t have too much Fanservice/violence, at least until I download Hulu on my IPad then I can watch whatever violent and sexy anime I want.
Did you try One Punch Man? I personally hate it, but it probably should be less offensive than average Isekai.
Otherwise try Kimetsu no Yaiba (Demon Hunter) it's supposedly popular this season. Or Tate no Yuusha no Nariagari (Rise of Shield Hero), throw away isekai of this season, also supposedly popular.