Aoi Kirine

Aoi Kirine is a player of the Horizon game.

Appearance
Aoi is a young teenager with narrow brown eyes, messy black hair and freckles near his nose. He is always wearing an earring on his left ear and clothing with mild to dark tones.

Personality
Aoi used to be a very cheerful and hopeful boy, always trying to lift up his brother's spirit, he always tried his best to make everyone see the bright side of things, Aoi did this because of Inui's incurable disease, he wanted his brother to live so bad that all he could do was cling himself to this hope and never let go, but it was cut short after the sudden and premature death of his brother.

After that, Aoi became extremely introverted, almost never interacting with anyone, basically shutting down to his old life and society in general, the grief that Aoi and his father had to deal with bought them to shreds.

Background
Not much is known about Aoi's past, it seems like he spent most of his childhood helping taking care of his older brother, but had a very comfortable life as their father was very hard-working and could provide that for them. Aoi and Inui spent most of their time as children playing games, collecting figurines and playing cards together.

After Inui's death, Aoi felt like his world was shattered and nothing made sense anymore, he loved his brother dearly and they had a really strong bond, so he spent almost a whole year secluded into their house, only accepting visits from Akane and Azuma from time to time. After a while, Aoi came to terms that he should seek treatment in order to put his life back on track and help his father do the same.

Inui Kirine
Aoi loved his brother dearly and did everything in his power to make Inui feel loved, cared for and to take care of him, even if Aoi was the younger one. He didn't see it as a burden and never felt like it was a waste of time, Aoi really loved his brother and would do anything for him, so, when Inui died, he felt like a part of himself died with him.

Akane Honoka
Akane was Inui's childhood friend and probably his first friend, Aoi and her never were that close but she was always around, pretty, caring and smart, so it was natural that Aoi would appreciate her presence and become extremely closer to her after their mutual loss of Inui.

Abilities
It's currently unknown in the series if Aoi now possesses his brother's abilities, or if he has any of his own.

Equipment
Aoi was shocked when he came back to Horizon one day (after Akane asking him multiple times to do so) and saw Inui's Diamond Sword waiting for him in his mailbox, Inui sent all of his items to his beloved brother some days before his death, when Aoi found out, he burst into tears, saying that Inui must've suffered so much because he knew he was going to die.

The blade still has the same attributes it had when it was under Inui's usage, being able to morph into different types of stones.

Trivia

 * Aoi is trying to become a vegetarian.