Mangas I read

Toujou Aki lives with his younger step-brother, Saku who is a university student. Instead of going home to sleep though, Saku will stay out with as many women as possible, to the point of being a man-whore. Aki, on the other hand, has a deep hatred for women, enough to make him nauseous being around them. Aki?s one secret is that he would do anything for his brother. No matter what it is. However, everything can change in an instant during the silence of three minutes.-

A story about a flame of unexpressed feelings, controlling and eating away into the blood relation. A brothers' forbidden love.

One shot included in book "Rakuda Tsukai To Ouji No Yoru"

Fuji Azuma is thrilled to have the chance to spend two whole weeks with his adorable 8-years-younger nephew Taira, head over heels for the kid and the proudest uncle there ever was. But when he learns at the end of their time together that Taira and his mother are moving overseas, he’s shocked to receive a parting kiss and a vow that Taira won’t return—”until I’m taller than you, Azuma-san.” Four years later…and Taira’s back to make good on his promise.

Shun and his older brother have a little strange relationship...

WARNING: CONTAINS INCEST

Koganei's story "Kusatta Rasen" and also "Ayaui Kyouen" in which the Makino brothers appear can be found in the main series -

Rakuda Tsukai to Ouji no Yoru
( http://www.mangago.com/read-manga/rakuda-tsukai-to-ouji-no-yoru/ )

Keiichi is raising his twin nephews Ren and Takumi as his sons. Ren is a promising future researcher and Takumi is a national swimmer. Keiichi's always wanted to give his two excellent sons whatever they wish for, but on their 20th birthday they unexpectedly started pestering him about... "They want...my body?!" Kamon Saeko draws the crazy love triangle of these two boys that want to stay with Keiichi both as family and as lovers!

A rental store employee has a surprise waiting for him upon taken an customer home.

What is the true relationship between high schooler Ataru Koganei and the famous actor Shuu Kanai? Koganei appears also in "Ienai Itami o Daite Iru".

One shot included in book "Rakuda Tsukai To Ouji No Yoru"

Tsubaki, a high school student, lives together with his two older half-brothers. Their relationship is a bit unusual.
Incest themes are used in this work... and probably bondage as well in the last two volumes.
Mangatraders won't host the second part from V03 due to the content of shotacon

Kazuma, the unruly eldest son at a prestigious dry-goods store, dotes on Koutarou, the son of his father's mistress who was welcomed into the main house after the death of the latter's mother. But Koutarou rejected his confession and slipped through his hands. Then Kazuma is suddently attacked by the accomplished and serious second son, Ibuki! How will Kazuma react to his tenacity!?

Azuma Sakuragi is deeply in love... with his twin brother, Miyabi! Miyabi is a pure genius at archery, but pretty much useless at everything else. You would think Azuma would be fed up with taking care of him all the time, but instead, he's happy to spend as much time with Miyabi as he can... until one day, the A.C. in Miyabi's room breaks down, and Miyabi has to sleep in Azuma's room... and share his bed! Can Azuma keep himself from secretly touching his brother?