You're a male soldier who is unknowningly reincarnated into the World of Katekyo Hitman Reborn. ----- Instead of One, The Sawada household gave brith to two Sons. Different by 3 year, Sawada Tsunayoshi is the Little Brother of Sawada Natsume. who turns out to be a bully(?). Natsume's main target? why his little brother of course!