

About
Oreimo follows the daily life of an ordinary high school boy named Kyousuke Kousaka. Kyousuke’s younger sister Kirino is a pretty fashion model, but also hides a dark secret of being an otaku of adult games. Kyousuke is the only person to whom Kirino reveals her hidden obsession and other issues.
Cast
Seasons

Season 1
Living in the shadow of his talented younger sister, Kyousuke Kosaka conducts a normal lifestyle until he accidentally finds out that she hides a secret. In addition to being smart, pretty, and popular; Kirino Kosaka is also an obsessive consumer of anime and eroge (adult computer games). What will Kyousuke do? Will this tear their already rocky relationship apart or bring them closer together?

Season 2
Kyousuke brings Kirino home from America where she attended a special track & field camp. Surrounded by her friends, Kirino gradually gets her life back to normal. In stark contrast to her friends is Kyousuke, who is unhappy with Kirino's attitude towards him. She has been ignoring him since she came home, as if their relationship had gone back to how it had been a year earlier.
Episodes
Season 1

My Little Sister Can't Be My Love
For years, ordinary high-schooler Kousaka Kyousuke has had an icy relationship with his younger sister Kirino, a star athlete who is also a star student.

My Little Sister Can't Bring Me to an IRL Meet
While being grilled by Kirino over why he hasn't made any progress in the game she ordered him to complete, it occurs to Kyousuke that she needs some friends that she can talk to without concealing her otaku interests.

My Little Sister Can't Be This Cute
Kirino finds her first otaku friends at the IRL meet: "Kuroneko" and "Saori Bajeena." They spend their days deep in discussions over their otaku interests. Seeing Kirino this way puts Kyousuke's mind at ease.

My Little Sister Can't Be Going to Summerket
One day, Kirino's non-otaku, "public" friends—Aragaki Ayase and Kurusu Nanako—come over to visit. Kyousuke is harshly told by Kirino to not let her friends see him.

My Little Sister's Best Friend Can't Be This XX
On the way home from an enjoyable Summerket. They bump into Aragaki Ayase, Kirino's best friend.

My Childhood Friend Can't Be This Cute
Kyousuke is asked about his relationship with Manami by his friend, Akagi. Akagi is exasperated when Kyousuke answers that, although they don't have a romantic relationship, he doesn't want her to be taken by anyone else.

My Little Sister Can't Be a Novelist
Kyousuke comes home one day and is startled to find Kuroneko loitering in the living room by herself.

My Little Sister Can't Be Animated
Kirino has made her debut as an author. Reader response has been overwhelming, and her editor has even better news to report.
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