I find that I only ever tolerate the Great Shibuya Polycule concept if it's portrayed as a remix of their canonical interactions but with certain benefits. For example:
Emu kisses Saki on the cheek as she's heading to practice and minutes later tackles her brother into a hug. The Tenmas are not dating and will never be and the same goes for the other siblings. That doesn't mean Emu can't love them both and equally.
Rui sends Ena a photo. Ena asks how the hell did he get her Nightcord and then puts a heart under a photo of all the second years cosily sleeping in the same bed. After meeting for the first time, Rui doesn't hesitate before kissing her hand like he does with all the other ladies he swoons.
Mizuki always makes sure to send a goodnight kiss to her homies. After a record of 316 consecutive days of goodnight kisses, Akito and Tsukasa sneak into Mizuki's house to see what could've gotten them to forget. Upon finding a disgruntled and miserable Mizuki, they decide to hold them through the night. They kiss each other goodnight irl this time.
Kanade has a minimum of 10 wives. Her 10 wives are in a similar situation.
That's right, all your faves are in a massive qpr.
