・Items necessary.
A strand of hair from someone you want to strengthen a bond.
・Procedure.
You ask to have a strand of hair from someone you want to strengthen a bond, and wrap it around your little finger.
If the hair won’t break for a week, a bond with him/her is much more strengthened.
・Important point.
If you do it with him/her together, the bond with him/her is much more strengthened.