A straddled vehicle comprising: an internal combustion engine including an electronic throttle valve provided in an intake passage and a fuel injector configured to inject fuel; an accelerator configured to be operated by a passenger; an accelerator sensor configured to detect an amount of operation of the accelerator; an engine torque sensor configured to detect a torque of the internal combustion engine; an engine controller device configured to control the torque of the internal combustion engine, an engine brake controller device configured to control a degree of engine braking, which is actuated by the torque of the internal combustion engine becoming less than zero; and a mode setter configured to selectively set one of at least a normal mode in which the degree of engine braking is not reduced and a first reduced mode in which the degree of engine braking is reduced, wherein: the engine controller device includes a calculator configured to calculate a target torque based at least on the amount of operation of the accelerator, and a controller configured to control the electronic throttle valve and the fuel injector so that the torque of the internal combustion engine is equal to the target torque; the engine brake controller device includes a target torque corrector configured to correct the target torque by adding a first additive torque to the target torque, which is calculated by the calculator when the torque of the internal combustion engine is less than zero while in the first reduced mode; and the first additive torque is set so as to be smaller as the amount of operation of the accelerator becomes larger so that an opening of the electronic throttle valve increases as the amount of operation of the accelerator increases. an internal combustion engine including an electronic throttle valve provided in an intake passage and a fuel injector configured to inject fuel; an accelerator configured to be operated by a passenger; an accelerator sensor configured to detect an amount of operation of the accelerator; an engine torque sensor configured to detect a torque of the internal combustion engine; an engine controller device configured to control the torque of the internal combustion engine, an engine brake controller device configured to control a degree of engine braking, which is actuated by the torque of the internal combustion engine becoming less than zero; and a mode setter configured to selectively set one of at least a normal mode in which the degree of engine braking is not reduced and a first reduced mode in which the degree of engine braking is reduced, wherein: the engine controller device includes a calculator configured to calculate a target torque based at least on the amount of operation of the accelerator, and a controller configured to control the electronic throttle valve and the fuel injector so that the torque of the internal combustion engine is equal to the target torque; the engine brake controller device includes a target torque corrector configured to correct the target torque by adding a first additive torque to the target torque, which is calculated by the calculator when the torque of the internal combustion engine is less than zero while in the first reduced mode; and the first additive torque is set so as to be smaller as the amount of operation of the accelerator becomes larger so that an opening of the electronic throttle valve increases as the amount of operation of the accelerator increases. the engine controller device includes a calculator configured to calculate a target torque based at least on the amount of operation of the accelerator, and a controller configured to control the electronic throttle valve and the fuel injector so that the torque of the internal combustion engine is equal to the target torque; the engine brake controller device includes a target torque corrector configured to correct the target torque by adding a first additive torque to the target torque, which is calculated by the calculator when the torque of the internal combustion engine is less than zero while in the first reduced mode; and the first additive torque is set so as to be smaller as the amount of operation of the accelerator becomes larger so that an opening of the electronic throttle valve increases as the amount of operation of the accelerator increases.