Tatakau Shisho - Volume 6, Chapter 4: An Old Man’s Dream and Its Sacrifice – Part 2

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.

Travel to the game world.

Matthew found that there seemed to be a little problem with his system.

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“Occupation: Necromancer

Task: plant trees

Target: 1000 trees

Reward: Summoned item ‘Bone Dragon’ & a lot of EXP”

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In this way, a necromancer who respected the way of balance more than the druid was born.

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- Description from novelbuddy

After a tear in reality pulls Kagari Shuya into a white room he discovers a futuristic interface for reincarnating in a different world. After looking through the different races and skills he unlocks a new race, Lucivault, a type of vampire with none of its characteristic weaknesses. All set to start his life in a new world, Shuya is confused to discover that he is enveloped in darkness. As it turns out something went wrong when he was transported and instead of appearing where he was supposed to, he appeared in an underground cave. Shuya faces untold dangers, runs for his life, before finding his way out of the underground world. After escaping he meets his Shishou and begins to learn to fight with a spear. There is also a cute black cat named Rollo.

"Stay with me and I will give you everything your heart desires. For you, my darling, I would part the mountains, split the sea, and cause havoc on Earth just to have you."