Oreimo
Season 2 Episode 6 - My Little Sister Can't Bring Her Boyfriend Home
The boy is introduced to be Kouki Mikagami, a designer from Misaki's company who, to Kirino's surprise, is also an otaku. Later, after Kyosuke explains the 'fake date' scenario to Ayase and asks her opinion on whether Kirino has a boyfriend, things get tense at the after-party when Kirino witnesses Ruri assumedly confessing to Kyosuke. Irritated, Kirino announces that Kouki is her boyfriend, pushing Ruri to leave and angering Kyosuke with her remarks. Later, Kyosuke becomes irritated when Kirino invites Kouki to their house, receiving an angered slap from her when he shows his distaste. After speaking with a drunken Daisuke, Kyosuke grovels before Kirino, explaining his honest feelings and stating he won't allow Kirino to date Kouki until he proves himself worthy. Kirino eventually breaks down and reveals she lied about dating Kouki because she was jealous of Kyosuke and Ruri, with Kouki agreeing to pretend to be her boyfriend.
Episodes in Season 2
My Little Sister Can't Be Coming Back Again
25 min
The Big Brother I Trusted and Sent Off Can't Get This Addicted to a Mobile Dating Sim and Commit Sexual Harassment
25 min
My Friend Can't Take Off Her Glasses
25 min
My Little Sister's Rival Can't Come to Japan
25 min
I Can't Be My Little Sister's Boyfriend, and My Little Sister Can't Have a Boyfriend
25 min
My Little Sister Can't Bring Her Boyfriend Home
25 min
I Can't Become a Couple With My Underclassman
25 min
I Can't Create a Summer Memory With My Underclassman
25 min
My Little Sister Can't Be This Cute
25 min
My Little Sister Can't Wear a Wedding Dress
25 min
Little Sisters Can't Barge in on Their Brother Who Lives Alone
25 min
The Total Angel Ayase Can't Descend Upon My Place While I Live Alone
25 min
Little Sisters Can't Fall In Love With Their Older Brothers
25 min