Shin Sangokushimai (Fantasia Bunko) [Light Novel]

[Machine Translation] One day, I, a high school student, was summoned to the world of the Three Kingdoms with my sister-in-law, Nanami. Furthermore, I was given the name Liu Bei and Nanami was given the name and ability of Zhang Fei, and in order to return safely, we were told to "unite the world"! What's more... I will protect you. Please let me stay by your side! His own sister, Yukino, who was separated from him, has also been summoned as Guan Yu! The rivals include Cao Cao and Sun Jian, who are beautiful young generals, and Dong Zhuo and Lu Bu, who have a dangerous atmosphere, all of whom have strong habits. Meanwhile, Guan Yu and Zhang Fei... The two are now brother and sister in law, so they must sleep together at night! I've slept with you many times, too...! I'm not sure what the future holds, but with the bond between brother and sister and the greatest ability in the three kingdoms, I'm going to be a warrior!

高校生の俺は、義妹の那波と共にある日、三国世界に召喚された!?しかも俺は劉備、那波は張飛の名と能力を与えられ、無事に帰るためには『天下統一』しろだって!?しかも...「私が兄さんを護ります。ずっと傍にいさせてください!」生き別れた実の妹・雪乃も関羽として召喚されていて!?ライバルは美少女武将な曹操や孫堅、ヤバい雰囲気の董卓・呂布などなど、癖の強い相手ばかり。一方、関羽と張飛は...「義兄妹の絆を結んだからには、夜も一緒に添い寝ですね!」「あ、あたしだって、一緒に寝たことくらい何度も...!」先行き不安だが、兄妹の絆と三国随一の能力で無双するぜ!