Kanojo no Imouto to Himitsu no Stay Home ~Uchiki Musume ga Haitoku Netori!~

Sayoko Amafune and Aritomo have started living together in preparation for marriage. - Then, Sayoko's parents decided to renovate their home, and her parents moved to a rented house near their place of work. - However, Sayoko's younger sister Emiru has to live with Aritomo for a limited time at Aritomo's house near her school because her school is far away. - Emiru is not good at socializing and is a little off. - At first, she doesn't greet Aritomo and doesn't even speak to her. - Over time, they became more open and less grumpy. - Then one day. - One day, while working side by side with Emiru, Emiru accidentally started to cling to Aritomo and entwine their legs together. - She stares at Aritomo awkwardly but seductively.​