Imouto ga Brocon dearu koto wo Ani dake wa Shitteiru (Light Novel) - Recommendations

• Vol: 4; Ch: 36
• 2012

Maria Lunalady Blackhazel is a beautiful genius with heterochromatic eyes. Oh, that and she's also the leader of a ruthless, multinational private military company that brings forth chaos and destruction. Known as the "Princess of Pure Darkness" around the world, she's the subject of many people's admiration, hatred and fear. But to the main character Siyoung, she's an irrelevant person living in a completely different world. That is, until one day she suddenly shows up and kisses him.

• Vol: 1; Ch: 5
• 2018 - 2019

After his angelic brother’s birth 17 years ago, Haruhisa became an extreme brocon the moment he laid eyes on him. He poured all his love into his little brother in their busy parents’ stead, putting his own needs aside. On the day of his precious brother’s teacher-parent conference, Haruhisa marches in, ready to evaluate Mitsuhara’s worth as a homeroom teacher. A few days later, Haruhisa discovers that his brother has a lover! Moreover, it’s a male student from the same high school!? Turning to Mitsuhara to find out the truth, Haruhisa is suddenly kissed for some reason…?

• Vol: 1+
• 2023 - ?

• Vol: 13; Ch: 79
• 2016 - 2020

Yuu Nagami, a high school student aiming to become a light novel author has a little sister named Suzuka. Suzuka is an excellent student with good grades and great looks, but she's very cold toward her older brother. Every year Yuu keeps failing at the preliminary rounds of the light novel contest, but one day Suzuka reveals a shocking truth. The flirty sibling romantic comedy that Suzuka wrote has won the light novel contest! To make matters worse, Suzuka doesn't understand anything about light novels or moe so she begs Yuu to stand in for her under her pen-name, Towano Chikai!

• Vol: 4; Ch: 41
• 2017 - 2019

Neiko Futaba is the school idol, but little does everyone at school what's she's really like. Only her beloved younger twin brother Otohiro knows her overly clingy persona, much to his dismay. On top of that, it seems Neiko seems to be rather determined to seduce her brother in every way possible. Unfortunately (or fortunately) for Otohiro, it is just an everyday occurrence in the Futaba household...

• Vol: 2; Ch: 12
• 2015 - 2016

Ayane is in love with Tomoya, Her Onii-chan. But, their childhood friend, Sayaka is trying to split them up. Ayane is not going to let that happen, No one can take Onii-chan away from her. Her plan? She wants Onii-chan only for herself, and she is willing to do everything to make that happen. She wants to have a family with Onii-chan, only the two of them. No one else matters in her little world, and she is going to take care of everyone who tries to interfere.

• Vol: 3; Ch: 12
• 1987

Yuzuru, has been in love with her older brother, Fuyuhisa, for as long as she can remember. But when he finds out her feelings for him, her world is shattered when he tells her he can't return her feelings. Fast forward half a year, she's trying to move on and find a new love, but she just can't convince herself to forget him...

• Vol: 12; Ch: 300
• 2012 - 2016

When Konoe Moyako and her little brother, Akira, were young, he said he wanted to marry her. Naturally, Moyako decided that her little brother was a complete pervert who was obsessed with her. Now that they're both teenagers, Moyako is convinced she needs to 'rehabilitate' him. However, it seems that the 'perversion' is entirely in her imagination, and she can't seem to help turning completely innocent situations into creepy ones in her mind!

• Vol: 3+; Ch: 50+
• 2016 - ?

• Vol: 1; Ch: 6
• 2006 - 2008

Nao has taken care of his two younger twin brothers, Tetsuto and Asuma, for as long as he can remember. Thanks to his care and affection, they’ve grown up into two fine gentlemen who are now super popular at school. However, they’re both totally obsessed with their big brother! The two constantly vie for the innocent and oblivious Nao’s attention. Their competition goes into high gear during the school field day. With Nao as the prize, neither Tetsuto nor Asuma can afford to lose!