Oozora Subaru

Subaru is extroverted and tomboyish in nature. She is confident, hardworking, and always optimistic, even in situations that would discourage most people. This is in part because she is likely the one holoIdol who has gone through the most trouble in her early life, as she was born with a hole in her heart (a Ventricular Septal Defect or VSD, which means the wall that separated the left and right side of the heart didn't close correctly and created a hole) that threatened to kill her by the time she was 14, got ran over by car and even had her house burned down, which was the final straw that pushed her desperately into joining hololive, going so far to pretend to be an otaku to get accepted, which was successful yet ineffective due to its fakeness.