Domestic Girlfriend
The daily life of high-school student Natsuo is heavily complicated after his single father marries the mother of his teacher crush Hina Tachibana and her sister Rui - who he had shared his first experience with with at a preceding mixer. With the introduction of the sisters into his new home proving to be such a radical change in his life, the resulting complications make things very interesting for Natsuo and his writing aspiration.