Seiya/ Sailor Star Fighter
Seiya is Sailor Star Fighter and rather vain. In Sailor Moon Sailor Stars, Seiya takes an interest in Usagi. Mamoru is gone to America to study, so Usagi and Seiya get close. Unfortunately for Seiya, Usagi is still dedicated to Mamo-chan. She only thinks of Seiya as a very good friend. The other Star Lights are upset with Seiya for spending time with Usagi when he should be looking for their princess instead (it's not the Moon Princess, but a different one we haven't seen yet).

(That's Serena's window.)

Seiya is my favorite of the Sailor Starlights because he's the nicest. In the last episode, he asks Mamoru to take care of Usagi. (Usagi was still oblivious to how Seiya really felt about her.)