Could you please recommend a long anime with excellent storyline for older audience based on my preferences?

The most common: Naruto Soul Eater Hunter X Hunter Detcetive Conan Vampire Knight I recommend (my opinion): Elfen Lied Full Metal Alchemist ...I agree about Death Note (...totally awesome...).

Bokurano - During a summer camp, 15 children, 8 males and 7 females, find a grotto by the sea. Deep within they discover working computers and some electronic equipment, and later the owner, a man called Kokopelli. Kokopelli claimed to be a programmer working on a brand new game, in which a large robot has to defend the Earth against fifteen alien invasions.

He persuades the children to test the game and sign a contract. All but one of them signs, barely a moment later they mysteriously awaken on the shore believing what happened was just a dream. Claymore - In a world constantly haunted by demonic predators known as "Youma", the everyday life of humans is full of fear and suspicion, as these monsters easily blend into human society to hunt their hapless prey.

However, in this world, there is also a mysterious organization, employing half-human, half-Youma warriors to effectively track down and kill the demons. Called "silver eyed witches" or "Claymores" after the huge Claymore swords they carry, these female warriors are eyed with suspicion and distrust by most because of their inhuman powers. When the young boy Raki meets Clare, a Claymore sent to kill the Youma haunting his hometown, he is eventually caught in a story of love, revenge and treachery, as Clare's past meets with her future... Red Garden - Strange suicides have been taking place in New York.

One day, four girls from the same high school wake up in the morning feeling tired and dizzy and not being able to remember anything about the previous night. In school, they find out that one of their classmates has committed suicide. School is canceled for the rest of the day, but instead of going home, the girls are drawn to a park by butterflies only they can see.

Suddenly a man and a woman approach the girls, telling them that they all died the previous night. Cowboy Bebop - Enter a world in the distant future, where Bounty Hunters roam the solar system. Spike and Jet, bounty hunting partners, set out on journeys in an ever struggling effort to win bounty rewards (money) to survive.

While traveling, they meet up with other very interesting people. Could Faye, the beautiful and ridiculously poor gambler, Edward, the computer genius, and Ein, the engineered dog be a good addition to the group? Tokyo Majin Gakuen Kenpucho: Tou - Something evil is stirring within the shadows of Tokyo... During the spring of his senior year in high school, quiet Tatsuma Hiyuu transfers to Magami Academy in Shinjuku.

The mysterious boy's "outsider" status and his profound skills in martial arts quickly earn him the friendship of class delinquent Houraiji Kyouichi. Through an uncanny connection and a happenstance challenge, he also meets Yuuya Daigo of the wrestling club, the captain of the girls' archery club, Komaki Sakurai, and Aoi Misato, the Student Council President. During their encounter, there is a sudden, harsh disruption of the Ryumyaku (literally Dragon Pulse, otherwise known as Dragon Vein or the Dragon Stream), the flow of arcane energy.

The surge awakens within the five teenagers a latent power, giving them each a supernatural ability. Enlightened to their newly acquired gifts by Hisui, the young heir of the Kisaragi Clan who maintains his family's antiques shop - as well as their duty to protect Tokyo from Oni (demons) - the Magami students decide to use their power to protect the city from the onslaught of dark forces. Battling the demons alongside Hisui Kisaragi, the five unlikely friends discover that they may have to face a greater threat to Tokyo other than destroying a few malevolent, random monsters.

The Ryumyaku had been disrupted by force, from someone invoking the Dark Arts - and that person has a wicked desire to unleash a long-dead evil. Can the teenagers overcome their own fears and flaws to fight against the Dark Arts? And soon they will also have to face their own destinies as they discover their Stars of Fate.

I hope this helps.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.