Nabekane Mikado♂

The protagonist, Tsubasa's older brother and the sisters Neneko and Arisu's childhood friend. Works as a part time traffic safety worker to support himself and his sister since their parents died. He meets Carrot while working and learns of her homeless status. Ever since he was a child he wanted to create a Mecha-con and to marry many girls and make them happy. However because they're poor his sister Tsubasa invents a device called 'Pandora' that downloads information from the internet directly to his brain to help him achieve his goal.