the #1 Nayuren shipper is Satozuka Kenta. Nayuta finally found someone he cares about even the tiniest amount and Kenta will use this fact as much as he can. the bio initially made it sound like Kenta is only here for his music, but he actually cares about Nayuta a lot ... so it's obvious that anything that has a positive effect on him would be supported by him.

and when you think about it, it's only because Kenta brought Ren to Nayuta's apartment that day that Nayuta came to the battle of the bands, and only because Kenta suggested it that he sang STARTING OVER which ended up being somewhat of an eye-opener. without Kenta we wouldn't even be here. before we got more context for the characters I was sure Kenta & Nayuta would be heavily shipteased, but their actual relationship is way different (in a good way!! I like it a lot, Kenta's the one who knows the most about Nayuta and they kinda connect to each other despite not outright being FRIENDS, esp now with Argonavis in the picture) ...

basically what I'm saying is Kenta WILL be Nayuta's best man at their wedding, unless he becomes a priest beforehand for the sole purpose of being the one to officiate the ceremony, which to be fair I could also see him do