War of Resistance: 1937, I'm the Ultimate Collaborator!

After transmigrating to 1937, rich second-generation Du Du gets bound to the [Strongest Traitor System]. The louder the infamy, the greater the rewards! “Ding! The Host has been cursed by his comrades. You’ve obtained [Divine-Level Marksmanship]!” “Ding! The Host has been pelted with eggs by the public. You’ve obtained [Japanese Proficiency: Native Level]!” “Ding! The Host has shot an ‘patriotic hero’ dead, shocking the nation. You’ve obtained [Perfect Disguise] + [Threat Detection]!” To survive and save the country, Du Du has no choice but to go further and further down the road of treason. On the surface, he is the Japanese invaders’ sharpest attack dog, a man everyone wants dead. In secret, he is a brilliant patriot known by the code name “Yama,” whose intelligence reports are worth an army of a thousand men. When his own people assassinate him and the whole nation celebrates, his true identity is finally revealed. At that moment, four hundred million compatriots weep!