If you're looking for manga similar to Shoujo Sosuu, you might like these titles.
Mutsumi, the oldest sister, is an excellent cook and has a loud voice. The second oldest, Akemi, is a beauty who likes to read books. The third, Izumi, is a cheerful and straightfoward sporty girl. Hitomi, the youngest sister, is a tidy and graceful girl who is good at knitting.
The manga centers on two sisters. Karin, the older sister, is about to graduate from college, but hasn't yet decided where she will work. For now, she is content with taking care of her younger sister Kurumi, which she has done since Kurumi was little. When Karin finally makes an important decision regarding her future, tragedy strikes their family that will change the course of their lives.
This is a story about Akira and her brother, Minato. They live in a watch shop, and they share a secret.
Follows an aspiring manga artist and her older brother. The story begins when the sister's work wins the Rookie of the Year award. Even though she should be happy, for some reason her face is sullen. Is she hiding a secret?
Nori, a young girl, looks after her younger brother Take and other people in their neighborhood in Ginza.
Kanda Jinbouchou, the oldest bookstore in the world. The three Karakida sisters moved to the city to protect their grandfather's will. Surrounded by the scent of used books, the three sisters spin their everyday lives.
Nakahara Yusuke is a high school boy who has a very loving younger sister, Maria. She loves spending each day taking care of him, doing things such as cooking and cleaning around the house. However, she typically goes a bit too far into treating him like a child--she has a habit of coming to his classroom at lunch to hand-feed him his bento, or brushing his teeth for him at home. She even snoops out his hidden porn magazines. Other people think they're a bit weird, and that Maria acts like his lover or his mom.