If you're looking for manga similar to Danshaku no Aijin, you might like these titles.
It wasn't supposed to be like this... I just wanted to be a sailor like my late father... It's the third week of training as a deep sea fisherman, and the ship is full of rascals who do whatever they want. Kouta is caught in the net of their lust, and he is assaulted by his mates every night. The sailors on this ship are the ones he wanted to be like... During this perverted voyage, Kouta is hit by even greater tragedy!!
One evening, Hisanaga approaches Morio at a bar with just one thing in mind. However, Morio is looking for a deeper relationship. Can Morio break through the wall around Hisanaga's heart to get something more than empty sex?
"You'll do as I say until I say enough." I'm straight, but I enjoy taking pictures of hot guys to look at. One day, I accidentally drop photos from my collection, and who should find them but Kashitate, the guy the photos were of! Underneath Kashitate's friendly smile is a cruel sadist. "If you don't want people to find out..." At first it was just running errands, but things go a little too far... But it's so hard to turn him down when he's so good-looking!! Where is all this gonna lead...?
On a whim, Aron Cornwall decides he wants to live a pirate's life of thrills, sailing on the high seas in search of distant lands and buried treasure. And when you are the son of a duke, you generally get what you want. Accompanied by his reluctant manservant, Robin, Aron scrounges up a crew—including a cook who cannot cook, a transvestite assassin, and a boy (girl?) genius—and sets off on the craziest pirate adventure you've ever seen!
Salaryman-horny-uke, Aida Tomoki is surprised when well-endowed sexing-his-way-through-college seme, Mochizuki Shougo walks into his hotel room by mistake. After their first unplanned tryst what exactly does Tomoki-san have in mind for Shougo-kun?
Daigo, a young man drowning in debt, is forced onto a fishing boat to work off his repayment. He finds himself surrounded by strikingly handsome men wanting sex day and night! How long can he stay straight aboard this ship of sin?! He's got his back to the wall, but not for long...! Can he ever get back to shore!?
An English nobleman, Earl Christopher (33 years old), lives a systematic and routine life. Due to his methodical way of life, he has been isolated from the living world and does not even know what sex is. One morning, Christopher comes upon a man camping in his territory. Because of Kanamori, a Japanese gardener, part of his territory has been unexpectedly turned into a Japanese garden with a water fountain! Kanamori expresses his liking to the enraged Christopher and suddenly pushes him down...
Young rookie detective gets assigned to a surly yakuza investigator who wants nothing to do with him. Chikara's persistence to help Ibuki in his investigations leads him to follow Ibuki late one night. Chikara sees Ibuki and 3 others carrying a large wrapped bundle out of a church, which he thinks might be a body. Dazed as he makes his way home Chikara almost gets hit by a car. Next thing he knows Chikara finds himself in a hotel room with the dazzlingly gorgeous driver about to experience his first taste of male on male pleasures.
In order to cure his sadness because of the death of the one he loved, Nishiki, the owner of a café spent a night with a bypassing man named Kaoru. However, he gradually starts to care for Kaoru, who was supposed to be nothing more than a casual one-night-stand…