Yohta Kubo

The boy Shuri met when she was in New York at a shooting range. He rented one of Saho's apartments. When he could not pay the rent, he confronted Saho, who offered to let him pay his rent later in return for his services as a bodyguard. Throughout the series, he makes many advances on Shuri, but stops whenever she shows any sign of discomfort. (Source: Wikipedia)