Description:

When Fuuka hit her second year of middle school, puberty kicked in. Now she's really tall and has huge boobs. Due to her hairstyle, her classmates call her "Saipu," after the cyclops. Her affection for her older brother was cute when she was a little girl and said she wanted to marry him. Now it just freaks him out, since she's decided she's adult enough to follow through on her childish promises. This 4-koma style manga is the story of the life of this cyclops girl! (Source: MU)

Description:

Keita has two step-sisters who love him in a lustful way and have no problems expressing it, they even are in competition about that. Much to the laughs of his friends, he endures it but when one day they come to his school to give him his lunch, he gets annoyed and explodes on them, then they confess their feelings for him in front of everyone and leave. Feeling sorry he chases after them and says that he'll study hard in order to get in the same high school as them. (Source: MangaHelpers)

Description:

Yamato loves his little sister. His sister is the cutest and sweetest girl in the world, and he won't settle for second best. Unfortunately, everyday life and the rest of the world intrude on his idyllic plans, and he finds it's not as simple as he imagines it should be. Follow along with tough Yamato and cute Masaki as they deal with the problems of an otherwise normal family life. (Source: MU)

Description:

Noa's brother has a huge sister complex. So huge, he attends college in Tokyo just to escape it! Years later, his sister Noa shows up and informs him that she's taking the Tokyo University Entrance exam and that she may me moving to Tokyo as well. Little does Noa's brother know, she has a similarly huge brother complex. Read as Noa's brother attempts to control himself around his little sister, while she sets him up for failure. (Source: jCafe24)

Description:

High School junior Takanashi Nao has a problem: she has a crush on her dreamy older brother, Shuusuke. Fortunately, when Nao discovers that she was adopted as a child and they’re not related by blood, it seems like the coast is clear—but Shuusuke just doesn’t see it that way. To make matters worse, Nao finds herself in direct competition against Shuusuke’s hot childhood friend, Iroha, not to mention class president Mayuka. As all three girls vie for Shuusuke’s attention, Nao soon learns that all is fair in love and war! (Source: Seven Seas)