|Academy Grad. Age||
|Chūnin Prom. Age||
|Jōnin Prom. Age||
Life in Kirigakure (Past)
Nothing overly-significant occurred in the span in which Kagirinai was to be considered an infant - he was raised at a young age in the art of Kenjutsu by the local Academy Instructor's suggestion and lived a relatively dull and repetitive lifestyle.
Graduating from the village academy at the age of 9, Kagirinai continued to pursue a life where his sole dependance was on the sharpness of his blade; as a reward for completing his tertiary education his parents gifted him a steel katana, which served as the new symbol in his yet to be interesting life over a wooden practice sword. Spending the majority of his time in training his use of handling such a prestigious weapon he accepted missions only when he had the time to spare, by his parent's instructions.
Passing the Chuunin Exams at the age of 14 Kagirinai left home much to the rebuttle of his legal guardians and for the time being learned how to shape the physical presence of water to better suit his preferences. Additionally he completed a fair amount of missions at the expense of falling out of his regular training routine, and for the following few years he refined his swordsmanship to greater extremes, although not enough to become renown by the other villagers.
Land of Iron Arc
Life in Kirigakure (Present)
- This character is heavily based on Assassin from the anime/manga series Fate/Stay Night.
- "Koyoichi" is derived of both "Ko" and "Yoichi", Japanese for "Peace" (幸) and "Seductive/Belittling Son" (妖一) while his surname "Ayime" is merely "EMIYA" the 'true' name of Archer backwards. This is fitting as his personality replicates that of the original character, of whom was considered to be a hero of justice and an eloquent individual.
- Kagirinai's hobby is engaging in levelled duels with foreign swordsmen.
- Kagirinai wishes the join the ranks of Kirigakure’s Seven Swordsmen of the Mist, just to engage its current members in a spar.
- Kagirinai's favourite food is tofu, while his least favourite is anything boiled.
- Koyoichi has completed 362 official missions in total: 21 D-rank, 38 C-rank, 157 B-rank, 132 A-rank, 14 S-rank.
- Koyoichi's favourite word is "Fair".
- Koyoichi's battle theme is.
- Koyoichi's casual theme is.