[@Satoshi Kyou] You mean the very offhanded confession from Kotori to Yuma in the ending of ZeXal? 'Cause outside of sexual tension, I can safely pree much nothing in terms of romance happens in those.

Acr-V is being joked about as "The straightest YGO series yet" for a reason, and that's because they go buckwild with the ship teasing. Pretty much a first for the series.

EDIT: and even in Arc-V it isn't that plentiful outside the literal inter dimensional counter part pairs.