Kekkaishi e no Tensei

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Kekkaishi e no Tensei (結界師への転生, lit. "Transmigration of Kekkaishi"; Reincarnation into the Barrier Master) is a light novel series published by Futabasha and written by Naotarou Kataoka with illustrations by Itsuwa Katou. In October 2018, a manga adaptation published by Gentosha Comics was started with illustration by Souichi.

Kekkaishi e no Tensei has been published in English as Reborn as a Barrier Master by Seven Seas Entertainment since November 2, 2021."Genres: Action, Adventure, Fantasy"

Synopsis
Barrier Masters: wielders of a rare and powerful guardian magic, entrusted with the lives of those under their protection. When his life on Earth ends, Lynos is fortunate to be reborn and to inherit this special gift. What's less fortunate is that he's been reborn as a child, and slated for sale as a slave. Narrowly avoiding a dire fate, he is taken as a servant by a prosperous noble family, where he is trained to become the guardian of its reigning members. Step by step, one trial after another, Lynos prepares for a life of adventure as a Barrier Master!

When he opened his eyes, Kubo Tamotsu (34 years old) was reincarnated into the different world. He was reincarnated as a 6 years old boy with a 「Barrier Lv1」skill. But his status was a 「s*ave」. In order to escape from his harsh circumstances, achieve 「Peaceful life」, and be 「Surrounded by beauties」, those were his dreams from the previous life, he decided to struggle with all his strength.

Light Novel

 * Lets become Novelist
 *  to be added 

Character
Kubo Tamotsu. 34 years old. Died at the bathroom because of serious stomach ache and he is a programmer. A so-called IT warrior. When his life on Earth ends, Lynos (Lynos Daake Basam) is fortunate to be reborn and to inherit this special gift. What's less fortunate is that he's been reborn as a child (6 yrs old), and slated for sale as a slave. Narrowly avoiding a dire fate, he is taken as a servant by a prosperous noble family of Basam, where he is trained to become the shield master (Guardian/Barrier Master) of its reigning members. Step by step, one trial after another, Lynos prepares for a life of adventure as a Barrier Master!, after he open his eyes for opportunity and filled with happiness, he devoted himself to protect the family he could own. He gave a position as protector and supervisor of Basim national class treasure.

But the invaders of the empire has began to move they took advantage the situation until he saw the death of his family and lady Eril from a dragon to rage and despair, Lynos unleashed a devastating ice pillar from his ability of barrier the conjured the element to form a giant ice. all who invade in the Empire even the traitor Mister Wyton, Died from crushed. Become cursed people in the surrounding saw Lynos as a monster, After he took the Treasure as a Supervisor and protector he promised himself that he will rebuild the Empire. Lynos stayed in the forest and in his dreams his family came to see him and also lady Eril, After they talked and they came for Lynos the he is free for not slave they tell that it times up to goodbye but Lynos never insist that what he saw, that he wished to stayed or took him but Eril took promised to Lynos that to Live on now, until they final good bye Lynos took his journey upon his journey he met a fox and Pegasus that had been attacked by bear Lynos saved them and healed their injuries. "I wonder when was the last time I felt this way. No, from the beginning of my life, this might be the first time~. Anyway, kill. The ones who killed my precious people, my family, kill every one of them. Kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill, kill!!!!!!"

- Lynos', killing all invaders

Abilities
Lynos was trained by Basam Residence to become a protector until his adulthood, from swordsmanship and martial arts. Lynos have sharp instincts able to react in split second to instantly identify “the best personal course of action” during combat.

Lynos hold basam family treasure, every treasure that Lynos keep is contained National treasure weapon, armor, and accessories. Before the invasion, Lady Erza Promote as Supervisor for Basam Treasure because of being a barrier master.
 * -| LN Ch. 6=
 * -| LN Ch. 7=
 * -| LN Ch. 23=
 * -| LN Ch. 42=
 * -| LN Ch. 23=

Lynos barrier is the biggest asset both of offensive and defensive battle, the other skill like Element magic skill it only uses as support when in battle. Adding this he remembers his previous life as a programmer, giving him a large advantage in battle and being able to manipulate both of his skills in the battle.
 * -| LN Ch. 85=

The barrier the Lynos produced can only create a shield, wall, dome, or bubble. The barrier is very secluded, not even sound or air can pass through, even a magic the thickness of the barrier are good at capable of blocking or impeding approaching objects and nullifying attacks, including physical and energy-based attacks or even repelling or reflecting them, as well being used as a means of blocking the veins from the body of the opponent or containment to imprison others.

Trivia
 to be added 

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