itch.io

You have to manually set up relations for each character, for mc + mother + sister you'd go:

• MC - nothing special
• Char 1 - sister
  • Select MC, relation sibling
• Char 2 - brother
  • Select MC, relation sibling
    
  • Select Char 1, relation sibling
    
• Char 3 - mother 
  • Select MC, relation mother
  • Select Char 1, relation mother
  • Select Char 2, relation mother
    

After have you'd have a mother that is shared by both mc and sister.

I won't make it automatic as that would make it impossible to do stuff like half-siblings and other more complicated relations that are doable rn.

Edit: inculdes brother now