Mahiro Ichiki is a second-year office worker whose mother remarried and she now lives with her stepfather and stepbrother. She was bored because she was working from home a lot during the COVID-19 pandemic, but she got turned on when she found out that her stepbrother had a big dick. She seduced her stepbrother during his online classes and had sex with him all day long. She eventually used up all the condoms and had raw sex with him (creampie)!