Cool Yell 1 (Hero Bunko) [Light Novel]

[Machine Translation] Soma Nakahata has been leading a bleak life after losing his sister and mother. One morning, Soma is summoned to a village in another world where magic and spirits exist. One morning, he is summoned to a village in another world where magic and spirits exist, and is asked to be sacrificed to a great water spirit in order to stop the rain. Souma is drowned in a lake after being subjected to unreasonable wishes and violence, and he meets the water spirit Izan. There, he learns that his missing sister was also summoned as a sacrifice and killed. As atonement for the destruction of Soma's life, Aizan decides to offer the power of the Great Spirit. Souma decides to use his "ability to control water" to take revenge and eliminate summoning magic from the world. He then lives as "Soma", a super high mage with amnesia...

妹と母を失い、殺伐とした生活を送っていた中畑蒼馬。ある朝、蒼馬は魔法と精霊の存在する異世界の村に召喚されてしまう。「雨をやませるために、水の大精霊の生贄になってほしい」。理不尽な願いと暴力を受けて湖に沈められた蒼馬は水の大精霊アイザンと出会う。そこで、行方不明となった妹も生贄として召喚され、殺されていたことを知る。蒼馬の人生を壊してしまった贖罪として、アイザンは大精霊の力を捧げることを決める。蒼馬は『水を支配する能力』をもって復讐を果たし、召喚魔法をこの世界から消し去ることを決意。そして、記憶喪失の超高位魔導士『ソーマ』として生きるのだが―。