[GDHH-055] The sisters who don't get along well with each other are given an aphrodisiac to make up by forcing them to become lesbians! But...it turns out to be a forbidden threesome! My younger sisters don't get along with each other! They are always fighting over trivial things! When I try to mediate, I only end up getting hurt...and I'm the older brother...I just can't help it anymore! So, I've come up with a forbidden last resort!