Eisuke Kitamura  

, 北村 英輔

Your older brother, who has an issue with gambling, spends any money he earns rather than saving it for your family or paying rent. Despite this, he manages to work at Soichiros company for ten years and pay off all the bills. However, later on, it is discovered that Eisuke brings home many abandoned children because Sumi had asked for more siblings in the past, although she doesn't remember this herself. He claims that Sumi is his little sister, which leads to him losing all his money and causing Soichiro to fall into poverty. It turns out that Sumi and Eisuke are not actually related; he found her as a baby in a rose garden and raised her as his sister.