Senri & Rima

Rima Toya and Senri Shiki are both aristocratic vampires at the prestigious Cross Academy's Night Class.

Background
Shiki and Rima are both models who met while on the job and later became inseparable. When Shiki applied to attend Cross Academy, he requested to be Rima's roommate. She refused however, and Ichijo "adopted" Shiki into his room.

They work together on many occasions and they take on assignments from the Vampire Council to hunt down Level E vampires. The two of them share similar personalities and are almost always seen together. They seem to almost share a romantic relationship, often caring about each other's well-being, however it is best to say that their relationship right now is of very close friends.

In the fanbook, the type of person Rima likes is "Someone she doesn't make feel tired." Shiki's answer was "I don't really know. Someone who stays composed around me would be good."

Story Summary
When Shiki is possessed by his father, Kuran Rido, Rima immediately notices something wrong. After confirming that he really wasn't Shiki, Rima battles Rido, demanding him leave his son's body. After receiving an injury, she yells at Shiki, telling him he was an idiot for letting Rido control his body so easily, and that he should love himself more. Her words alone are almost enough for Shiki to awaken and break his father's control. When Shiki wakes up, no longer under Rido's possession, he embraces the still unconscious Rima, apologizing.

During the attack on Cross Academy, he carries Rima away from the dorm before it collapsed. She wakes while he was carrying her, telling him she was hungry and asking him to 'give her some blood later'. This is normally a request only made by vampire lovers to sate each other's thirst, or, something between slave and master. He agreed. For a while, Shiki and Rima were looking for Ichijo together, as he had disappeared. The two appear again at the vampire ball the Kurans are hosting. Rima was Shiki's date at the ball, originally refusing to attend but later agreed due to Shiki's pleading. They were seen blushing. The two later also visited Yuki together to deliver a message from Ichijo and are seen on modeling together.In the manga shiki eats a tablet that is like zeros tablets and rima gets worried and said " I don't agree with treating your body so careless just because your a vampire"

In the Pureblood Drama CD Pack, the former Night Class boys are talking about attending a party for boys to meet girls, and Shiki states that while Rima said she wouldn't mind him going, the others shouldn't assume he's single. He also adds that Rima might be pushing away because she was the one who told him to go.

In the Anime
In the anime they were dancing with each other at the Day Class/Night Class Ball. Rima often feeds Shiki chocolate-covered Pocky sticks. She also feeds him ice-cream at the Day Class/Night Class Ball.

Trivia

 * When Shiki fell asleep, Matsuri Hino said that she should have made Shiki lean on Rima's shoulder, not Takuma's, and admitted she was not very good at developing romantic relationships.
 * There are currently over 395 Fanfictions (including M-rated stories) written about the couple of fanfiction.net, which makes them the third favoured couple on Vampire Knight.