Sailor Moon is an iconic '90s magical girl anime and manga with plenty of epic battles, hidden memories, lost kingdoms, humor, friendship, and soapy romance. Usagi and Mamoru's romance is so foundational for fantasy and shojo anime that many shojo fans cite Mamoru as their first crush. There are plenty of other romance plots, too.
Source:https://www.cbr.com/sailor-moon-best-romance-arcs/