Through the course of unlikely coincidences, a man and woman meet again and again in three different lives. What will become of their love in the world of the immortals?

From Dan of Population GO:

In a world where girls who have turned into an "Eternal Labyrinth" endangers the world, only one person doesn't want to kill them. Arisu Shinnosuke hates society which revels in those who kill the labyrinth diseased girls. Only he strives to find the cure and reverse the disease all in order to save his little sister, who turned.

In a country built like a tower, the higher your floor, the better your life, and the lower the floor, the worse your conditions. Rabbits live on the higher floors, while wolves live on the lower floors. One rabbits vows to track down and destroy wolves with her sword.

where war is rampant among clans, kingdoms, humans and non-humans. An amnesiac girl named Aria Gayle lives with her adoptive family in a relatively peaceful village where Humans and non-humans co-existed. However, one day on her way home with Atla in a foggy forest path she was attacked by a strange monster. Which led her on a journey to uncovering her memory, along with Quinn and a few companions they fight the enemies of her past.

Set in the context of the world in 2040, the entire earth had fallen into drought and only Japan was able to survive after it by inventing a method of cell compression. It's a world where everything has been made smaller: The diminished world. It is the underwater city called JURA.

Two kids that live in the new version of the world start to connect through a transient period and remind themselves of how pretty the old Earth is and so as their childhood. As they grow up, they go on a journey in an unfamiliar world where survival situations happen every day.

In a fantasy world, fighter Tatsumi sets out for the Capital to earn money for his starving village, and finds a world of unimaginable corruption, all spreading from the depraved Prime Minister who controls the child Emperor's ear. After nearly becoming a victim of this corruption himself, Tatsumi is recruited by Night Raid, a group of assassins dedicated to eliminating the corruption plaguing the Capitol by mercilessly killing those responsible.

In an imaginary age of gods about 20 years after the war, Japan is flooded with all the superhumans ever written about in fictional stories: titans from outer space, lifeforms from a mystical world, phantoms and goblins from ancient times, cyborgs created by scientists, relics that rose out of the ruins of ancient civilizations, and the list goes on. Some of them make no secret of their existence and have gained popularity in the society, while others cloak their identities and fight in secrecy.
Naturally, the Japanese government cannot ignore the existence of these superhumans and establishes an organization under the Ministry of Health and Welfare - the Overpopulation Research Laboratory, a.k.a. the Superhuman Bureau. Their mission is to identify and approach superhumans, then oversee and safeguard them.

Human beings always thought that they are the only intelligent lifeform, but that is not true. This there are lots of things happening in the world that human science is unable to explain, within the human world, feral humans are appearing, they look human but they are a threat to the human species. they have been named " Sha / Evil " human being are totally unable to deal with these "Sha/ Evil" before "sha/Evil" was known to the general population, a group of mysterious individuals formed an enforcement department - Song of the black night

Seto Yu is a 12-year-old boy, that is abused violently by his father. One day, he is transported into a fantasy world with video game mechanics after being killed by his abusive father and he discovers that he has the unique ability to steal other people's skills for his own use. He quickly uses his special power to take revenge on the townspeople who bully him and obtains a harem of beautiful girls who love him unconditionally even though he shows no romantic interest in any of them and has the physical build of a skinny teenager

From Hoshikuzuu Scans: In this country, there exists a god called the “batsu”. And a surreal and beautiful batsu called Rei is the master of a servant called Theo. Their roles were passed down from generations in their family, but their relationship gradually turns to love as Theo’s desire to stay together grow stronger day by day. When he feels the warmth of Rei’s body, he feels comfort. However, batsu age several times faster than normal humans, and Theo will also eventually outlive Rei.

Certain people suffer from a mysterious disease which causes a wind-up key to appear somewhere on their body. The key has to be wound regularly, otherwise they will stop moving. Miku’s parents, who suffer from this disease, are captured by the authorities, while Miku escapes into the town to seek help from a mysterious boy called Kuro.

Komugi has lived most of her life at home, until one day when her father suddenly comes home with two tiny men. These two tiny men are the incarnations of legendary enchanted cookbooks. Komugi's Dad charges the two, French Cuisine and Japanese Cuisine, to live with and cook for his daughter. How will Komugi cope with the two tiny rambunctious and handsome guys?

Backstory of the events taking place before Saint Seiya.

Tamaki is in love with Shinji. He's a spoiled, arrogant and self-centered guy and lately he's been playfully clinging and getting too close to Tamaki to deal with tension. Thinking that this can't go on, Tamaki is determined to distance himself from Shinji, but it just makes him want to see Shinji all the more.... It's a series of school love strories that will leave your heart and body throbbing.

Jack O’Brien is a penniless detective who runs his own agency, together with his partner, Eileen. One day, they are called to investigate the truth behind a terrorist attack at a bridge in the city.

It’s exam time at Lumieria Magic School and apprentice witch Killey is busy studying. Her familiar Nica offers to take care of the house during the exams…will this clumsy familiar find a way to help his mistress?

The you who sparkles on the water’s surface… You were supposed to be my senpai, and yet my heart starts to go strangely wild?!

In the distant red snow fields of war torn Siberia, the child soldier, Silver Wolf Bronya, gets adopted by the Cocolia Orphanage. A fateful meeting with Seele would set the stage for tragic events ahead.. Explore the origins behind Bronya’s mysterious past and her connection to Bunny 19C!