Saki

The protagonist's younger sister, who works for an IT company in Tokyo. With her stunning proportions and cool appearance that captivate everyone, she is feared as an "unapproachable beauty" at her company. However, her true nature is that of a severe brother complex sufferer. Once work is over, she rushes back to her brother's apartment (or family home) and it's her daily routine to hug him, calling it "brother replenishment." Now that she's an adult and has financial independence, she tries to shower her brother with expensive gifts, only to be scolded, "Don't spoil me."