Can you recommend some anime works that are as sickly as Future Diary?

Answer 1

I don't know if it'll satisfy your needs, but I'll try my best to recommend a novel that's the most relevant to your description." I'm Loved to Death by My Sick Girlfriend " is a light novel written by the author, Kikyo-chan. It's a fantasy novel. The general plot of this novel is:

One day.
I realized that I had transmigrated into a novel manga and became the male protagonist who was loved to death by the sickly female protagonist...
----------------------------
" The Sick System Loves You Very Much " was a fantasy romance novel written by the author of the Day Walker Vampire. The general plot of this novel was:

The story was about how the handsome human system overthrew the Lord God and took control of the world together with the host.
----------------------------
" Starting from Tokyo, Anti-Sick Beauty " was a light novel written by the author, Flowing Time. It was a daily love novel. The general plot of this novel was:

His dream was to live a peaceful life, be the prime minister of JK, and never be in the air force. However, things did not go as he wished." I'm sorry, but I have to be part of your future plans. So, Hoshino-kun, I just ruined your future." Under the cherry blossom tree, the sickly girl said. "Is that so? However, I have already grasped the future in my hands, and I will never let go of it in the future." Since he already had the system in his hands, he had to rise up and resist. [The so-called love cycle, two-way rush, is to give her a taste of her own medicine!] [Only magic can defeat magic. The best way to deal with a sickly girl is to be even sickly!]
----------------------------
" The Girl Who Likes Me Has a Big Problem " was a light novel written by the author, Ling Xin. It was a daily love novel. The general plot of this novel was:

A teenager with a terminal illness suddenly received a so-called system notification on the eve of his life? As long as he completed the mission, he would be able to survive? A stoic girl who had sealed her heart, a junior who wanted to not let others leave behind any regrets in their high school life, a student council president who was extremely black-bellied for academic credits, a girl of the same level who had a dual personality for some reason, a chuunibyou who escaped reality…hey hey! Why did this mission always make him come into contact with problematic girls?
----------------------------
" What should I do if I'm loved by a sickly witch?" This book was a light novel written by the author, Surreal. The general plot of this novel was:

Ignorant, afraid of sickness...
----------------------------
The book " Enjoy Healing in 2D " was a light novel by the author, Huang Tian Dafa. The general plot of this novel was:

Yes, it was a story about drawing comics in the 2D world. The main theme was Bakuman, and there would be many manga characters in the middle, such as Natsume and Manga Artist and Assistant.
----------------------------
" Two-Dimensional Love Story " was a light novel by the author, I'm Crazy Ha. It was a derivative doujinshi novel. The general plot of this novel was as follows:

She reincarnated into the anime world and became the betrothed of Snow of Snow. She joined the service department and helped the female protagonists of various anime worlds. From then on, the love story began. 。
----------------------------
" My 2D Goddess Wife " was a light novel written by the author, Dream, who was engraved in his heart. The general plot of this novel was:

I'm Hiroshi Takasaka, and Hiroshi Takasaka is my sister.
I also have a system that allows me to travel to the anime world. Akatomi, Ri Gokawa Koto, Yuri Nao, Misaka Mikoto, and Reim all received my help.
I live in a special world where Saber was summoned by me. Cat girls are also a kind of existence. Hatsune Miku is famous all over the world.
I still have many goddess classmates. Snow is snowing, cool breeze Aoba, Kato Megumi, Ying Lili, Jade set Ako, six flowers, Asuna, cone name true white. But why are so many people fighting to be with me?
And you, Ichinose Hoami, don't join in the fun. There are already so many people. Wait a minute, Nikko Kanzaki, aren't you a man?
----------------------------
" Soft Girl in the Dark " was a sci-fi space-time travel novel written by the author, Fairy Fish. The general plot of this novel was:

The female protagonist was a cute and harmless little angel in front of people, and a bloodthirsty little demon behind people.
Naimon, who had been trapped in the laboratory for her entire life, killed everyone in the laboratory and bound herself to a strategy system.
[Soft girl: I thought I was bound to a soft and cute host, but I didn't expect to provoke a demon who can turn dark at any time and has its own bug.]
Mengmeng, your soul belongs to me alone." "You are this king's food!" "Come here, I'll teach you. Mengmeng, the position of Yan Wang Fei can only be yours."
Namon, who was doted on by thousands of people, thought,"Oh…it's all because of cuteness."
#Cute and violent, sickly and delicate male god, obediently take the bait #
[Sick Su Shuang is sweet, the female lead is not stupid and sweet, she abuses scum, abuses the best, abuses her love rival.]
[A young girl's heart ++++, sweet, sweet, and cute.]
- -
----------------------------
" The Great Dream of a Trash Salted Fish " was a light novel written by the author, Orange Bunny Zhijiang. It was a funny and sarcastic novel. The general plot of this novel was:

Hope and despair, struggle and redemption, a life that began because of anime, and a life that ended because of anime. A warm friend, a strange senior, let us watch the life of the useless Ji Fan in the daily life of stumbling and laughing. PS.･∀･)ﾉﾞ嗨的新人君一枚，不喜勿喷，就酱。