i rly enjoy Niki & Rinne canon interaction and all, very fun and very interesting! They've got this great relationship dynamic going on. Relationship-wise, i really like them ❤️
As for non-reversible ship, tbh i'm actually more on the Rinniki side rather than Nikirin, im rly sorry💦 (im more in the eastern fandom side so im more familiar w/ eastern shipping culture etiquette. From what ive seen, Rinniki and Nikirin fans have quite a different taste in how they produce and consume fan content (fanart, fanfiction, etc), how they interpret canon materials, and how they shape the relationship dynamic beyond canon materials!) Nikirin beyond-canon dynamic & fancontent isnt really my taste, but i dont mind seeing them sometimes!