>>529635420
Nozomi is too white bread to share her life partner.
Takumi and Hiruko are willing to share their love. Realisticly Takumi could cheat on Nozomi but a poly ship wont happen with Nozomi. Tsubasa drops out too, while she has a canon polycule she is possesive and doesn't like to share.
Kyoshika is dumb enough to fall for it, but thats just abuse.
Darumi is the most realistic third partner in a Hiruko-Takumi polycule.