Momiru

Momiru is the het ship between Momiji Sohma and Tohru Honda from the Fruits Basket fandom.

Canon
Momiji and Tohru first meet when he visits one of the buildings his fathers owns and is coincidentally where Tohru works part time. He greets her in German, which shocks her because she doesn’t know nor understands him. Before she leaves, Momiji kisses her on the cheek, flustering her and making her dash out in embarrassment. Unbeknownst to her, she drops an ad for the upcoming school festival, which Momiji picks up.

He later attends the festival and reunites with Tohru. He hugs her as he has fun during the festival, forcing Tohru to his his rabbit form from the other students. Momiji immediately develops a deep attachment towards Tohru as he helps her understand the tragic backgrounds of other Sohma zodiac members, and she responds with kindness, which endears her to him. He goes as far as to invite Tohru to join him and other Sohma members to a hot springs inn, where he shows her affection and even asks her to sleep in the same room as him, much to Kyo and Yuki’s dismay. The next morning, Momiji reveals to Tohru that he is actually a year younger than her, surprising her due to his youthful appearance.

Momiji feels so close to Tohru that he reveals his past to her - his mother's memories of him were erased since she couldn't bear having a son that transformed into a rabbit. And as such, his little sister, Momo, does not know Momiji is her older brother, and his father does not want him to interact with them either. Although saddened at having been rejected and left alone, Momiji wants to embrace all of his memories of his family and consider those memories precious. Tohru pulls Momiji into a hug and they tearfully comfort each other, causing Momiji to turn into his rabbit form.

Tohru goes with Momiji and other Sohma members to the Sohma summer house for summer vacation, where he goes scavenging for beetles with Tohru. When Akito arrives, Momiji is more worried about Tohru than his own safety. When Akito asks to see Tohru, Momiji refuses, angering Akito who punches Momiji. Tohru witnesses this and steps in. Momiji goes to get help as Akito berates Tohru. He later apologizes after Akito leaves and she hugs him to comfort him.

As he matures, it is strongly hinted that Momiji has developed romantic feelings for Tohru, as he tells Kyo that if he, Momiji, becomes more handsome and taller that Kyo, maybe then Tohru will accept when he proposes. After his curse breaks, Momiji sees clearly that Tohru is in love with Kyo and naturally feels pain but knows Tohru would be happier if Kyo’s curse breaks.

Once the Zodiac curse of all the Sohmas breaks, Momiji learns Tohru and Kyo are planing to move to the country together. He is happy for them and states he hopes to find a new love so he can show her off and wishes Tohru nothing but happiness.

Fanon
The ship sailed as a result of Tohru's kindness towards Momiji and how Momiji got attached to Tohru. After their introduction the two are commonly seen hanging out together whenever Momiji comes to visit. Tohru often defends Momiji from Kyo and Hatsuharu whenever they get mad at Momiji for irritating them on purpose or whenever he tries to hog Tohru all to himself. Throughout the series the two are still extremely close and they both enjoy each other's company. While it's not the most popular ship in the Fandom due to Momiji's extremely young appearance and how Tohru had more popular ships with Yuki and Kyo there's still a small portion of the fandom that ships them.

Fandom
FAN FICTION
 * Momiji/Tohru tag on FanFiction.net

Trivia

 * Tohru and Momiji are similar in personality, which makes it easy for them to get along so easily.
 * Momiji is the first Sohma to kiss Tohru, though it was on the cheek.