Kakeru
Kakeru was the man that Luna fell in love with in the SailormoonS movie. When she collapsed in the middle of the intersection, Kakeru swept her up and took her to his house. He fed her, got her fever down, and stayed up all night to take care of her. When Luna woke up, she was surpised that he had done what he did.
Kakeru was extremely weak. He wanted soo badly to become an astronaut like Himeko, but he wasn't strong enough to go into space. He told Luna once that it was his biggest dream to go into space and admire the moon.
Kakeru picked up one of Princess Kaguya's jewels which had fallen from the sky, and brought it back to his home. He thought the jewel had come from the Princess of the Moon, so he kept it. After awhile, it began slowly draining away his energy.
Kakeru cared for Himeko, but he didn't show it. He also treated Himeko badly because she thought what he believed was nonsense. When Himeko went up to space, she promised to come back, but he told her not to bother. She ran off because he hurt her so much, but he hurt too because he did really care for her.
Luna wanted to become his Princess Kaguya, which he believed in like an obsession. When the Silver Crystal destroyed the jewel that was taking his energy, Luna became human, and introduced herself as Princess Kaguya. She took him up into space, and told him to treat Himeko good because he loved her. Kakeru agreed and then noticed the crescent moon and yellow bow she had on. Kakeru tried to say Luna's name but she covered his mouth before he could speak it. He then realised that Princess Kaguya was actually Luna.
When Luna returned him to Earth, he went to the airport where Himeko was returning with a bouquet of flowers for her. Himeko saw him and ran into his arms. Luna knew at that point it was time to go home. On her way out, Artemis confronted her and told her of his true feelings. They were in love soon afterwards.