Yoichi Himukai is a Judge in the Magic Law Association and a friend of Muhyo and Roji.
Appearance
Yoichi is a former student in the M.L.S. He wears a red shirt (or sometimes white) with black pants. His hair colour is black, shoulder-length, and he wears a headband on top to move his hair back. He wears a black sweater and black pants with ear muffs instead of his headband during the Winter time. He has gray eyes and black pupils.
Personality
Yoichi is somewhat of a womanizer, and is popular with the female Magic Law students. He likes to grab girls' breasts (particularly Nana's) and is able to determine their bra sizes simply by grabbing their breasts.
Besides this, he can be extremely focused. Known for his skill, he is called the "Prince of Magic Law" by some. He can be annoying sometimes but he is also a smart judge, as he plans his attacks in at least one second or two. In that time, he can set up a decent trap or plan but this is because when he noticed Muhyo's skill bloomed, he kicked into high gear.
Yoichi appears to have a crush on Nana. However, underneath this exterior resides his experience and wisdom that rival Muhyo's. Yoichi had offered to be Muhyo's partner, but Muhyo had already chosen Roji instead. Yoichi is an expert at every type of Magical Law except for Execution. It is also shown that Yoichi has become smarter and faster since Muhyo's talent bloomed.
Background
Yoichi was originally a student in the M.L.S, with Enchu, Biko and Muhyo. His teachers were Rio Kurotori and Page Klaus. Yoichi was especially fond of Rio because of her large breasts. He usually stayed in M.L.S with the other students but he was mostly with Muhyo and Enchu. He liked to play games unlike Enchu, who always studied and did his homework. He wasn't a smart student in the MLS, like Muhyo. They were both average. Without Enchu, they couldn't get their work done. Once when their teacher got angry at them for tardiness, the three were asked to solve a puzzle. Yoichi couldn't solve the question, nor could Muhyo, but Enchu solved in a few minutes and got them all out of trouble.
Yoichi liked Enchu a lot and considered him one of his best friends alongside Muhyo and Biko. He tried to stop Enchu from going into Forbidden Magic Law but failed to notice his friend's grief and insanity before it was too late, costing him his friend. When he went to the Association for help, Page Klaus agreed to help him search for Enchu. Since the beginning of the manga, Yoichi never stopped working in the investigation for Enchu for 2 years. He found common ground with Muhyo and the two often shared information about Enchu even while Muhyo was practicing.
Return to M.L.S.
Magic Prison
The Writ of Passage
When he was looking for the Writ of Passage from Isabi with Page, he lead the team
Invasion of M.L.S.
when it came to taking down Buhpu and defeating his puppets, his partners were Judge Imai and Assistant Judge Ginji. He made all the plans at the lat minute so that he can prove it to Enchu that he didn't have to be an Executor to save his mother, he could've done it as a Judge, so he made Kiriko summon Hellsquitos to spit out the truth about the Cortlaw family. Once they save Enchu, Yoichi was sad that Enchu has to live in the Arcanum and didn't want to say goodbye to him. He still tries his best so that one day Muhyo will accept him as a partner.