Ameiro Paradox
Slightly annoying with all the complaining and whining, but it was very funny and enjoyable.
Ai No Shitsutakabutta
Hada no Ue no Renai Jijou
Only the last story is a fantasy/supernatural. The two other stories before it are about two young businessmen who are colleagues & friends, and the drama of the two middle aged guys they are in love with Oneshot renai tsuu http://www.mangago.me/read-manga/renai_tsuu/
Daikirai Na Aitsu
Very realistic couple. Very funny and enjoyable.
Zutto Issho ni Kurashimashou
It's not really incest since the brother is adopted and had no blood relation whatsoever.
Yume Musubi, Koi Musubi