Kagero Okuta/Synopsis

Vigilante - My Hero Academia: Illegals
Giran acts as a regular supplier for the Vigilante Knuckleduster during the period when he was working as one of the Naruhata Vigilantes.

Generally, Giran supplied him with painkillers, but when Knuckleduster was about to face Kuin Hachisuka, he provided him with chemical products to make a pheromone cocktail to attract insects and a Taser Knuckle.

Vs. Hero Killer Arc
Giran is seen talking to a fellow broker about the current state of society and the black market. The Broker comments on a popular video about Stain, describes the Hero Killer's past, and predicts that Stain influence will inspire new villains to join the League of Villains.

Final Exams Arc
After scouting Himiko Toga and Dabi, he brings them to the League of Villains to be introduced to Tomura Shigaraki.

Tomura immediately tries to reject the duo, but Kurogiri convinces him to at least hear them out. Giran seems amused but reminds Kurogiri that he's just in it for the money. He then introduces the recruits one at a time. After Himiko introduces herself, Dabi refuses to reveal his real name. This irritates Tomura so much that he loses his cool and starts a fight, and Kurogiri has to step in to stop the three of them from killing each other. Kurogiri calmly admonishes Tomura, reminding him that this opportunity to expand their organization is advantageous since they are in the spotlight. Tomura tells him to shut up and starts to storm off.

Giran tries to ask where he's going, but Tomura tells him to shut up too and then slams the door. Giran remarks to Kurogiri that Tomura is too young and immature. Kurogiri asks that they wait a few days for Tomura's response and assures them that they would come to an understanding.

Shie Hassaikai Arc
Thanks to the League of Villains's actions, Giran is quite happy because the black market has seen a resurgence last weeks, and requests for suits and related items have doubled.

Giran phones Jin Bubaigawara to ask him for Dabi's location. Giran tells him that Tomura wants the League of Villains to gather together. Jin replies him he does not know where Dabi is but soon begins struggling and starts contradicting himself. Giran notices that Jin is suffering an identity crisis at that moment, so he lets him go.

Days later, after Mr. Compress lost his arm in the meeting between the League and the Shie Hassaikai, Giran is the one who provides him with a robotic arm to replace his lost limb.

Meta Liberation Army Arc
In their objective to destroy the League of Villains, the Meta Liberation Army managed to track the source of the Leagues' black market supplies. They capture Giran and try to force him to reveal details about his clients. However, Giran had destroyed his clients list and refused to talk.

In mid-December he is brought to the Meta Liberation Army's establishment. The Detnerat Company President, supreme leader of the Liberation Army, Rikiya Yotsubashi, tries to get information on the League out of him by offering to pay him any price. Giran responds by stating that he resents the company for moving into his industry. He also proclaims that he doesn't do business with people he does not like. This irritates Rikiya but he smiles and states that “they are going to be spending a lot of time together".

Giran was tortured by the Liberation Army. Five of his fingers were chopped off and distributed, along with articles of his clothing, to locations that the League had previously been which alert the police and general public. Despite being tortured, Giran remains quiet and does not leak any information. However, members of the Army manage to restore Giran's destroyed client list. With this new information Rikiya is able to locate and call the League of Villains. He introduces himself to Tomura Shigaraki as Re-Destro, leader of the Meta Liberation Army and goes on to praise Giran's resistance.

Tomura demands Giran's release and for Re-Destro to call later, but Re-Destro refuses and offers him two options in freeing Giran: 1) The League must go to Deika City in Aichi and submit to the Meta Liberation Army or 2) Refuse to submit and fall to the Heroes.