ONEZ-271 Why is the older sister who used to be cool working at a delivery health service? Yayoizuki Mizuki

My older sister who used to be cool and admired. But one day she changed. She suddenly stopped coming out of her room and was a shut-in for a long time. The cause is excessive parents' expectations and bullying at school. Her older sister, who has dropped out of school, spends her days like an empty shell. But one day, a turning point came. She started working part-time. She's also in rehab, and she's only working for a short time. She is getting better little by little. But by chance I found someone who looked just like my sister on the Deriheru website. That was the beginning of it all...