...I understand how you came to that conclusion, but no. Noel and Flare (top) are an IRL couple, with matching rings. The artist here is shipping Pekora and Marine by suggesting they're also couple with rings, just hidden behind their gloves
Nian orders/makes/provides Lava with her new gear in the most recent event for EN so a while back for CN but since it was resent on the english client it explains the interest.