Eiki Fūma

is an Academy student and a member of the Fūma clan in Konohagakure. His father serves as a Tokubetsu Jōnin on the Konoha Military Police Force.

Personality
Eiki is a very serious boy, eager to excel in his goals as a ninja. While very proper in his way of talking, taking pride in coming from a famous clan, he can be overconfident in his abilities and ultimately reckless. He has a crush on Kae Yukiwari and gets nervous when interacting with her. Likewise, he gets jealous at other boys getting closer to her than him.

Appearance
Eiki is a fair-skinned boy of average height. He has amber eyes and dull grey hair that is buzzed on the bottom and parts to reach his ears on the top. He wears a black, long-sleeved shirt with a grey vest over it that has 3 downward-facing, yellow triangles lined up as one big triangle, and dark blue pants with black ninja sandals.

Abilities
Descending from the Fūma Clan, Eiki is noted to have great talent for ninjutsu. He has shown capable skill with Shurikenjutsu, able to hit the target with multiple kunai thrown at once. He also had adept chakra control, as he was one of the quickest in his class to master the Tree Climbing Practice.

Kawaki & Himawari Academy Arc
Upon starting at the Academy, Eiki quickly states his goals on becoming a ninja, making a good impression on everyone. When he dropped his handkerchief, Kae returned it to him, and he developed a crush on her. When Kawaki, older than any other student in the class, tried to befriend her, Eiki found him suspicious and was jealous. He attempted to force a spar against Kawaki, but he nonchalantly dodged all of Eiki's attacks. While having his injuries tended to, Eiki overheard the teachers talking about the tools storage room, and sneaked in, taking a summoning scroll. When he found Kawaki talking to Kae in a secluded spot, he attacked Kawaki with the summon, but was knocked unconscious by the summon, with whom he had no contract. Kawaki defeated it, and he and Kae left him there, certain he'd wake up with no lasting damage.

Without proper recollection of what happened, he continued to distrust Kawaki. He attended Kae's tea party, where he continued to voice his suspicion of Kawaki, even more so upon his awkward answers to questions. When Kae served the cake she made, Kawaki rushed to stop her from eating it, knocking tables over, and covering Eiki in cake. He began hurling plates at Kawaki in retaliation until Kae told them both to stop. Eiki later called out Osuka on her overbearing mocking of Kae. When Kawaki and Himawari exposed Osaka as having forced Neon to go along in lacing the cake with mustard as a prank, Kae dropped her composed attitude to reprimand her for it. When she tried to recompose herself, Eiki and the others were pleased with her genuine attitude. The party resumed, with Kawaki bringing everyone taiyaki. Days later, Eiki listened as some of his class-mates reported their experience with investigating the Academy's Seven Mysteries at night, doubting their veracity in an age of Scientific Ninja Tools.

Later, Eiki was put on a practice team with Neon and Suzu Sōgi to prepare the class for eventually team-ups. While dismayed that he couldn't be teamed with Kae, he was eager to show-off his skills during a series of competitions. Likewise, he built up a rivalry with Osuka. During the first competition, he quickly led his team to gather the most flags in a Tree Climbing Practice relay race.

Later, Eiki joined in a school play about Orochimaru's desertion of Konohagakure. He was assigned the part of Jiraiya. To better understand his role, he secretly read the "Icha Icha" series. Much to his embarrassment, Sōsha Amino learned about it and printed an article about it. Later, he received an anonymous note that Kawaki was secretly a real shinobi. Between that and learned that Kawaki had a real forehead protector, Eiki saw as this as chance to remove Kawaki as an obstacle to get close to Kae. He approached about his discovery so she would write an article, but she refused to without proof. Later, he swapped roles with Ehō Norimaki, who was playing Manda.

During a rehearsal, he tackled Kawaki, eager to reveal his real forehead protector. The forehead protector discovered was revealed to be a prop (which Osuka secret switched out for Kawaki). At the same time, the scuffle destroyed the stage, and the class went through an exhausting effort to repair it. As Kawaki pointed out his reckless actions both endangered Kai and ruined everyone's hard work, Eiki realised how selfless he was and broke down in tears. As everyone forgave him, they worked together to fix the stage. He later apologised to Kawaki for his actions, revealing to him the anonymous note.

Trivia

 * Depending on how it's written, Eiki's name can have the following meanings:
 * As 英気, it can mean "great wisdom", "excellent disposition", "strength (to face something)".
 * As 盈虧, it refers to the phases of the moon, waxing and waning.
 * As 鋭気, it can mean "courage" and "high spirits".