Manga by author Sakira - Status ongoing

From Blissful Sin:Seeing a friend dressed up in a sailor uniform at a drinking party, his heartbeat immediately speeds up and his crotch starts throbbing! To find out why, he takes his friend to a love hotel and...? The arousing sailor uniform clinging to a muscular body, bondage brothers, oyaji harassment, sex on the beach and much, much more - all in this fully-loaded novel!

From Blissful Sin:A sex battle between the selfish young master and the wild detective!After a certain incident, an excellent policeman named Jin loses his job. No longer employed, he decides to become a private investigator. One day, Kujou Anri, the young master of the Kujou family, walks into his office pretending to be a client. Instead, he ends up confining Jin! What was he really after when he bound and drugged the detective?These adult oneshots have finally been gathered into one volume! There will be plenty of man-boobs and extra drawing to spare!

After failing his midterm exams, Minami's mother recruits a tutor to help him with his studies. Luckily for Minami, the tutor turns out to be Uta, his childhood friend has hasn't seen for years. Minami's excited to spend time with his friend, but Uta seems to be excited for an entirely different reason