Kimi wa Kono "Boku" wo Dou Sadaku Nodarou ka?

Seiji Takagi is a high school student with a violent impulse that has persisted since childhood, despite his academic and athletic excellence. He struggles to connect with others until Takuma Suganuma, a skilled competitor, enters his life, and they develop a strong bond. Their friendship is tested when Takuma questions Seiji about the mysterious death of his sister, who was presumed to have taken her own life. This leads to Seiji being pulled into a magic circle and reborn in a different world, where he is summoned as an advisor to Crown Prince Durel of the Kingdom of Instrial. Takuma is also reincarnated and gains the confidence of the second prince, Ashley, as a soldier. The two reunite in this new world and become entangled in the royal power struggle while seeking the truth about Takuma's sister's death.