Growing up, Isamu have always loved being with domesticated animals. He would play with cats or dogs or bunnies whenever he had the chance to.
Isamu was born to a loving Korean dad and a Japanese mum in Hokkaido, Japan. He was the older of the 2 siblings, and matured very quickly since he was the one who has to take care of his younger sister when his parents were working.
When he was in high school, he would always visit the pet café near his home after school. He had patronised the café so many times to play with the animals that when there was an opening for a part-time animal caretaker, he immediately applied for the position. Getting paid to do what he loved was a really good opportunity in his teenage mind. His parents allowed him to work there on the condition that it wouldn't affect his results. Since his younger sister was old enough to take care of herself, Isamu could work without any worries.
And so, the day began with Isamu heading to school in the morning. Once school was done, he would head to the café for lunch and his part-time job, and return home for dinner and do his school stuff.
However, this life did not continue for long, because it was time for Isamu to enroll into a university. There wasn't any university in the small town where he lived in, and in order to continue his studies, he had to go to the city - Mystique City. He had chosen to enroll into Konsei University to get a veterinarian degree since he loved animals so much. While he was in college, he worked part time in a bar to earn some pocket money. That was when he opened his eyes to bartending, and actually liked it. There were endless possibilities and combos to mix up a cocktail, some were delicious while some were horrible. He learnt a lot about himself and how creative he actually was, and he wanted to embrace that side of him more. Since he was still studying veterinary, and was a little too deep inside to drop out, he followed through the degree, and after graduating, he took up various bartending jobs to familiarise himself with the alcohols and other basic stuff.
In the present time, in Mystique City.
Isamu now works as a bartender in Oasis. He still visits his family every once in a while though, and he always have to go back to the pet café near his home in the small town just for old times sake.