Ueda Shinsyu manga
From ShoujoMagic: Arisue Sei lived as happily as any normal kid would, just him and his mother -- a particularly private woman -- on an outlying island of Okinawa. There were also his friends Toichi and Moichi. The only unusual things about Sei were his sharp instincts and high intelligence. But everything changed when his mother was killed and he was kidnapped by the people of Neo Genesis. Now, six years after the kidnapping, Arisue Sei has returned to Japan with the title of "Doctor" at only the age of 18, and he's not the Sei that his friends remember. There are bodyguards with him who protect him from others who wish to possess his superb intellect. He says he's come back to assist with the research at Rakuhoku University, where Moichi now works, but here is where the door to Sei's secrets just begins to open...
A letter comes to the three Kohda sisters in Kamakura, bringing the news of their father's death. A father they hadn't seen since he divorced and left home 15 years ago. Despite feeling indifferent about their father, Yoshino, the middle of the three, and Chika, the youngest, go to Yamagata to attend his funeral on oldest sister Sachi's request. There, they meet Suzu, their young and reliable half sister. Umimachi Diary won the Excellence Prize for manga at the 2007 Japan Media Arts Festival Awards. It was also nominated for the 1st Manga Taisho, where it came in 3rd place, for the 12th Tezuka Osamu Cultural Prize, where it came in 2nd place, and for the 13th Tezuka Osamu Cultural Prize.
The drama club of an all girl high school puts on the play "The Cherry Orchard" by Anton Chekhov. Also includes an unrelated one-shot called Schoolgirl Princess.
Sayoko is a newly transferred student: gifted with rare beauty and mysterious and magnetic charm, she captures every student's attention. Among them, the introverted Yuiko and the grumpy Mari become friends with Sayoko, while Ryou, a known womanizer, wastes no time and tries to hit on her, unleashing his girlfriend's rage. But this story has countless plot twists, characters and secrets… From Banana Fish and Yasha's author, a manga that won a Shogakukan Award and defined as "a must" by Matt Thorn, one of the greatest shoujo manga experts. Recently Kisshou Tennyo became popular again thanks to the TV drama and the movie adaptation!
Toshi is your regular senior high student, except in the evenings when he's a bartender at a joint frequented by American servicemen, where he deals drugs, pimps, and even cross-dresses a little on the side. And his best friend Miyuki just happens to be the son of a loan shark with gay tendencies. If this sounds like the hardboiled world of Yoshida's later and most well-known work Banana Fish, it's balanced by Toshi's madcap adventures at his all-male school (where his mates jerk off to everything in sight, and scenes from shoujo manga are performed in all their histrionic glory), as well as the unexpected delicacy of his relationships with the women in his life. This episodic drama is bursting with all the frustration, the tenderness, the audacity, the horniness and the hilarity that comes with being young and male. All the tough, silly, dirty, and sweet things boys get up to in the locker room and out of it never brought a bigger smile to your face. Bunko ver released in 1994. summary from Baka-Updates Manga
Nature made Ash Lynx beautiful; nurture made him a cold ruthless killer. A runaway brought up as the adopted heir and sex toy of "Papa" Dino Golzine, Ash, now at the rebellious age of seventeen, forsakes the kingdom held out by the devil who raised him. But the hideous secret that drove Ash's older brother mad in Vietnam has suddenly fallen into Papa's insatiably ambitious hands--and it's exactly the wrong time for Eiji Okamura, a pure-hearted young photographer from Japan, to make Ash Lynx's acquaintance... **[WARNING: Just in case you missed it, this is a TRAGEDY. If you don't want to cry, don't start reading it!]**