Mistress Of The Evil Forest - Case 133: Survival game: This is my domain.

“God, please. If you are real, make my one last wish come true. Let me live.”When Callisto got diagnosed with an incurable genetic disorder at age 5, she was expected to live for only ten more years.With her life on its last leg, Callisto underwent an operation that has a one in a million chance of success called the Mutated DNA Fusion, granting her wish to live. However, the operation gave her more than what she wished for.With her black hair turned silver, cat ears overhead, and a tail from her behind, Callisto now has to live her life as a half-human and half-animal, a catgirl.

Reiji Saeki, who lives in the north eastern countryside town, lost his life in an accident during summer vacation. ……But before he knew it, a mysterious ball of light hovered in front of his eyes in a world of whiteness. That ball of light was a magician from a parallel world, and is looking for a person qualified to inherit the magic they had created to prevent it from being lost. Reiji, who rode on that suggestion, now lives in the parallel world Elgin, with a new body and powerful magical power.

Luo Lin Yuan was born delicate, with a big temper, a hard character, and a good face.

Yu Han is straight, good-tempered, and soft, and only sleeps three hours a day.

Yu Han didn’t want Luo Lin Yuan near him.

But Luo Lin Yuan wanted to be around him.

This is an innocent, sweet campus story in which Little Princess Luo went to great lengths to make friends.

Abstinent, Poor Gong x Obsessed with Cleanliness Little Princess Shou.

- Description from Novelupdates

With a marriage contract forcefully done, he married her, and all she could do was comply, and resent him deeply for that and for all the following misunderstandings they faced.
However, it was already too late when she understood she actually loved him.