>>103244025Diana was his step sibling but still she would get close to him and he would blush and she would get jealous of other girls and he would get jealous of her being around other guys. Yet he would call her sis so it was weird.
It felt like he did it more out of formality than actually think of her as a sister but the show was pretty weird about this.
>>103244145>>103244249The show is based on an Italian comic called Martin Mystère and in the comic Diana was his fiancee and then his wife. For some odd reason they made them step siblings.