Shinju no Nectar

Shinju no Nectar (神呪のネクタール, Nectar of Divine Curse, Nectar of Dharani) is a Japanese manga by Hiroyuki Yoshino (original) and Kenetsu Sato (manga). Serialized in "Champion RED" (Akita Shoten) from the January 2017 issue.

Synopsis
Kai Watari, a young man who thought that he was an unnecessary person in modern Japan. He is summoned to Sakura, the princess of the Rakshasa Principality of another world, as a "rare person who should be given a divine curse." Sakura was her "Princess (Ambrosia)" and she had another personality "Shakuntira" in her body. When Sakura and Kai are cornered by the Dara army, Shakun Thira appears and she transforms Kai into a terrifying warrior by giving Kai her "nectar".

Bibliographic information

 * Hiroyuki Yoshino (Original), Kenetsu Sato "Shinju no Nectar" Akita Shoten < Champion RED Comics >, 12 volumes already published (as of September 17, 2021)
 * MangaBox,
 * Released on May 19, 2017 , ISBN  978-4-253-23826-7
 * Released on September 20, 2017 , ISBN 978-4-253-23827-4
 * Released January 19, 2018 , ISBN 978-4-253-23828-1
 * Released May 18, 2018 , ISBN 978-4-253-23829-8
 * Released on October 19, 2018 , ISBN 978-4-253-23830-4
 * Released March 19, 2019 , ISBN 978-4-253-23831-1
 * Released July 19, 2019 , ISBN 978-4-253-23832-8
 * Released December 20, 2019 , ISBN 978-4-253-23833-5
 * Released May 20, 2020 , ISBN 978-4-253-23834-2
 * Released on November 20, 2020 , ISBN 978-4-253-23835-9
 * Released on April 20, 2021 , ISBN 978-4-253-32001-6
 * Released on September 17, 2021 , ISBN 978-4-253-32002-3

Character
Kai Watari is the main protagonist of the manga series Shinju no Nectar, He is a Japanese young man whose real name is Wataru and he is a weak young man who is not confident that he will change part-time jobs. Originally a human from the human world, Kai was summoned by Sakura ritual at the Abandoned Temple, the last survivor of a country named Dhalani, to be the chosen to save her world from tyranny and jeopardy through the power of Ambrosia, A divine curse mixed with breast milk of women that holds said curse. By drinking it, one can enter in a berserk-like state while maintaining their thoughts, effectively achieving levels beyond superhuman while controlling an element of nature depending on which divine soul the Ambrosia holds. but he grows up by encountering Sakura and fighting. After Gray, who was escorting Sakura, was killed by a poison dart, he puts on a mask and calls himself "Gray Enfield".

Throughout the series, Kai strives to save the world while trying to prove to himself and the world that he isn't useless.

Abilities
Kai has shown remarkable intellect, knowing formulas of chemical substances, such as nitroglycerine to create dynamite. And through using his surroundings, he can apply it to gain the advantage in a battle which can seem to be one-sided. He has also shown to be a genius war tactician, being capable of creating complex plans, even in the heat of the battle. He can also apply his experience from his past jobs in the real world to his fighting style and strategy, effectively gaining impressive results). Whenever drinking Ambrosia, Kai gains a massive boost in power, but it leaves him almost without any rational thought. However, past experiences and memories can surface to inform his actions, allowing him to target weak spots and use his powers in multiple creative ways.

Cannot enter berserk mode without Ambrosia. Is almost mindless in his cursed form, however past experiences and memories can still surface to inform and improve his actions in the heat of the battle. Also, while barbarian in a fight, Kai's cursed form is a powerful fighter who knows battles moves and uses all the skills of his cursed form and utilize it with every possible way in the battle and combining it with his past memories and experiences

Despite having no fighting experience or even military training, Kai is an exceptionally seasoned fighter. His methods of fighting rely on using his past experiences and memories in the fight to execute several amusing effects, such as when he used an extinguishing blast to nullify the fire which was caused from the blast resulted from his dynamite, or when he killed a shark-like demon, who severely wounded Shiera, a far more experienced fighter than he is by stabbing on his scales with a knife that had a dynamite finger in it.

His memories and experiences are also extremely useful when his in his cursed form. As when it was shown with the Stone Golem that Duke Gazuro was piloting, when he inflicted a small crack in it, before stabbing his sword-like arm in it, and used ultrasonic crushing method to weaken the armor molecular bonds, allowing him to easily pierce through it and kill Duke Gazuro.

Trivia
to be added.