When he was in junior high, he wears the middle school uniform for the Black Dogs standard.
After becoming a high school first-year, he wears the high school uniform for the Black Dogs standard.
He's very irritable whenever anyone mentions his height or flirts with his sister.
Kougi also shares the Black Dogs' dislike for the White Cats, as he had a rival, Ameria Curl. However, he showed himself to be open-minded and took part in ending the conflict, even becoming friends with Ameria though he has shown to get annoyed with her teasing.
Romeo, Hasuki And Kougi 1 & 2
After the school festival, Kougi has started to follow the leader of the high school first-year Black Dogs, Inuzuka. The latter noticed that he has been followed, so he lured Kougi into his trap and caught him. Before Inuzuka could interrogate Kougi, Hasuki showed up to meet with Inuzuka. She then saw Kougi and wondered why he is in the Black Dog upperclassmen block. As Inuzuka still doesn't know the student, Hasuki introduced to him: Kougi Komai, her little brother. She wants Kougi to greet Inuzuka, but he gives a cold shoulder instead. The girl then pinches Kougi's face as punishment. After this, Kougi greets Inuzuka. His sister still doesn't understand why Kougi is here, so he explains that he came to see what things are like in the upperclassmen block since he will be living here next year. And he wants to ask Inuzuka for directions. So the high schoolers bring Kougi on tour around the upperclassmen block. The first place Koiugi wants to visit are Inuzuka's room.
When they were entering Inuzuka's room, there were already visitors waiting for him, Kochou and Teria. Kougi then misunderstood that he was a lolicon. Teria explains that Inuzuka told them that he will call them to have some fun which makes Kougi think Inuzuka is revolting. Then all of the sudden, Kohitsuji enters the room with adults magazine. Kougi is getting furious of the situation. Kohitsuji says that Inuzuka is his boob-soul mate and tell all the stories of all the perverted things Inuzuka did. Inuzuka tried to get rid of Kohitsuji before he says anything worse but accidentally trip and fall over Hasuki to his bed. Kougi seen enough and say he didn't came here to ask for directions. He came here to spy on Inuzuka! He then attacks Inuzuka thinking that he was cheating on his big sister and took her as a fool.
Kougi tried to attack Inuzuka again but he ran outside. Inuzuka couldn't beat Hasuki's little brother. Even Maru told Kougi that Inuzuka was cheating on Hasuki. As the two of them running though the hallway and Inuzuka was having deep thoughts. Kougi jumped and tried to kick Inuzuka but he been ounch accidentally by him to a wall. Kougi was impressed but the real battle have begun. Kougi grabs a replica sword willing to punish Inuzuka. This is when Inuzuka realized that the two of them really are siblings. The two of them started running again. Kougi managed to catch up to him, jumped and swing his sword full forced. However, Hasuki appeared trying to defend Hasuki by letting the sword hit her. It was too late for Kougi to do anything so Inuzuka grabbed the sword and defended Hasuki. But the tip of the sword breaks and hit Kougi's forehead which causes him to faint.
Inuzuka, Hasuki, and Kougi were at the nurse office. Inuzuka then leaves Hasuki and Kougi alone. Hasuki tried to explain to Kougi who haven't woken up the reason why she is upset.
Romio and the Freshmen 1, 2 & 3
Kougi who is the new leader for the first year Black Dog facing of with the new leader for the first year White Cats, Ameria Curl. Before their fight was about to begin, they were stopped by Inuzuka and Persia. Kougi says Inuzuka should just quit being the second year leader for the Black Dogs. Inuzuka was trying to show Kougi and the rest of the freshmen around the campus but he refuse. Inuzuka ask if this has something to do with Hasuki which make Kougi panic worrying anyone will hear that. He say she has nothing to do with it. The suddenly, Hasuki showed up worried about Inuzuka. She told Kougi not to give Inuzuka any trouble which he ignored. He then leaves Inuzuka with all of his classmates.
All of a sudden, Inuzuka called the freshmen to the school gym. They went to the gym and saw that Inuzuka want to spare with them. They accept the challenge but lost in the end. The makes Kougi pissed saying that Inuzuka is a lowlife person who is forcing others to obey him. He then ran away.
The next day, Inuzuka invited the freshmen to the cherry blossom tree. They were about to leave until Inuzuka open up his shirt and stripped. He tried to make a joke but instead freaking the freshmen out instead. The freshmen then tried to leave but Inuzuka say he was just trying to introduce his little sister, Shuna who is also their classmate. Kougi understands the situation so he sits down for Shuna's sake. The Black dogs were having fun until the White Cats showed up.
Persia who was in charge of the group were also trying to make them see the cheery blossom but she didn't know that Inuzuka's group was also there. With both dorms seeing each other, they were about to fight until Inuzuka and Persia decided for a Badminton match. Somehow both dorms play the game and not willing to lose. Kougi who isn't playing is a shame of everyone saying they are being fooled by Inuzuka's plan. Kougi then notices two White Cats students planning something. After the match was over, the White Cats won! However, Kougi was rushing through the White Cats aiming to hit someone. Ameria taught that he wanted a fight so she took him on. Until Inuzuka stop her letting Kougi go. The reason why Kougi was rushing is that of the White Cats students throw a bottle at one of the female Black Dogs. Kougi and Persia managed to punish them.
After everything was settled. Inuzuka was asked to pick up grass as punishment for saying the fight back then was his orders. Shuna asked Kougi to come with her to sees Inuzuka but he was hiding behind a tree. Inuzuka and Shuna start to have a conversation but how Inuzuka really enjoys battles which doesn't evolve fighting. He wanted to teach the freshmen there are more interesting battles than fighting. Kougi then came out of hiding saying he is fine while calling Inuzuka "Mr.Guide".
Romio and the Servant Wars 1 and 2
Shuna, Kougi and Ameria were hanging out. They notice Shuna was bumped out so they ask what’s wrong. She explains that Inuzuka is too busy that she was mad that she can’t make herself useful to him. She started to feel lonely and the fact he already has a girlfriend means she can’t enter his room anymore. Ameria wanted to hang out with Persia too but she’s also busy with work. Kougi also feels the same way since he couldn’t meet with her sister recently, as the girls are put off by his clinginess, which embarrasses him. Shuna then came up with an idea and that is to be their Servants! They went to the office to talk with them about it. Though Shuna want to show them they are cut out for the job. Persia then let them help them out with the matter they are doing right now. They are planning to a school excursion to the West. Usually the past excursion are planned to go to their own country but this time they plan to combine the trip. They still need to secure accommodation for all 200 students who are going, get the Housemaster’s approval and book a cruise and arrange for the transport. Shuna, Kougi and Ameria want to do their work for them and prove they are fit for becoming their servants. The three of them went off.
The three of them split to do their own things. Kougi is in charge of the transport. He went to call every flight company he could, but none of them have a direct flight headed to the West. Kougi then feel depressed since he couldn’t get his sister’s praise. Unable to book the transport, Kougi return to the office and turns out Shuna and Ameria also couldn’t do their task. Leon, Scott and Aby return to the office and successfully did all the task which Shuna, Kougi and Ameria supposed to do! Since there isn’t any flights head to the West, Scott suggests to do a take a ship to the nearest island and then take a plane from there. Leon and Aby also did Shuna and Ameria’s task. They then showed off that this is just another day at work and they are prefects. They look amazing but Shuna, Kougi and Ameria feel annoyed. They were depressed saying they can’t be their servants at this rate. Though there is still another task they could do. They need another 100 signatures for those who are going for the trip. This is their chance to make a comeback.
Kougi, Shuna and Ameria went to look for second years who are interested going for the trip. The three of them did a great start but after that, everyone keeps ignoring them. Things aren’t looking good for them. But Kougi can’t blame them. He was wondering why would they go to the West in the first place. This plan was flawed from the start. Shuna doesn’t know they reason why but Inuzuka must have a reason for it. She then figures it out! The three of them went to both dorms and made a speech there. They explain why it’s important for them to go to the West. There was resistant at first but later a crowd has form and give them 150 signatures! They went back to the office and Inuzuka, Hasuki and Persia were surprise of the results. They were proud of themselves and the three of them have become their servants!
- He drinks ten bottle of milk daily to make sure he is growing.
- He likes Julio(Persia) because he is shorter than him.
- He hates it when someone calls his sister "Nee-chan" since only he can do that.
- His name was possibly inspired from Corgi dog breed.