Oh man that would be so helpful for Sannan. It'd take quite a bit of CR building for him to even seek help in the first place, but just developing new friends would be wonderful. They could go shopping for sweets together! Maybe that's how they even meet up in the first place, actually. Yamanami staring at all the new sweets that have popped up over the last 100+ years. Sempai teach him the way of the sugars.