This anime reminds me of the following animes and I will list them for you here. Here are my top picks for anime like Grisaia no Rakuen. Enjoy the recommendations!
Mahouka Koukou no Rettousei
In a world where magic is not a fairy tale but has existed for one hundred years siblings Tatsuya and Miyuki Shiba prepare to begin their studies at the elite Private Magic University Affiliated High School (Magic High School for short). Entering on different levels of the academic spectrum the two turn the once peaceful campus into a chaotic one.
In a hidden school surrounded by mountains, young ladies of good families are taught everything a high class lady needs to know. They are also completely cut off from the outside world, keeping them sheltered and innocent; however, a problem has come up recently—more and more graduates are failing to cope with the modern world after graduation. To deal with this problem, they’ve decided to kidnap a male commoner student, and enroll him as a student. They hope that this will be a gentle way to introduce the girls to the outside world.
One day, a mysterious virus appeared on Earth which killed every infected human over the age of 13. At the same time, vampires emerged from the world’s dark recesses and enslaved mankind. Enter Hyakuya Yuuichirou, a young boy, who along with the rest of the children from his orphanage, are treated as livestock by the vampires. Even in captivity, Yuuichirou dreams big. He dreams of killing vampires. He dreams of killing them all. (Source: Population Go)
Thanks to Meme Oshino, Koyomi Araragi, a high school student, is able to remain a human after coming across a female vampire. However, since the incident, Koyomi seems to meet girls who have an apparition-related issue. Hitagi Senjougahara doesn’t weigh anything. Suruga Kanbaru’s left arm resembles that of a monkey’s. Nadeko Sengoku was afflicted by curses from her classmates. Mayoi Hachikuji, a young girl who cannot find her way home no matter how many times she tries. Koyomi, a Mr. Nice Guy, ends up helping each and every girl solve her problem with the help of Meme Oshino. (Source: Aniplex)
The series follows Koko Hekmatyar, a young arms dealer who sells weapons under HCLI, an international shipping corporation that secretly deals in the arms trade. As one of the company’s unofficial weapon dealers, she secretly sells weapons in many countries while avoiding the local authorities and law enforcement as most of her work is actually illegal under international law. Traveling with her is her team of bodyguards who are mostly composed of ex-military veterans. Her latest addition to her crew is Jonah, a seemingly emotionless child soldier who is skilled in combat yet ironically hates arms dealers. Jonah joins Koko as he wishes to find the arms dealer responsible for his family’s death. What follows is Koko and her crew’s escapades around the world.
A spate of mafia assasinations occurs in America, the work of the mysterious organization named Inferno. “Phantom” is their most strongest and capable assassin, however a lone tourist witnesses Phantom’s latest act of murder. He unwittingly exposes the top assassin’s true identity, a young girl named Ein. Witnesses are usually killed, but the man is captured and taken to be brainwashed into “Zwei”, Inferno’s newest assassin, with no memory of who he is. From this point on, Zwei is drawn into a world of conspiracy, deceit and violence.
References: Wiki, ANN, MyAnimeList