[Home Tutor Crossover] White Feather

What you wish for, I will protect to the very end. I want to become your shadow, and I will also become the sharpest sword in your hand. The idea that Sawada Tsunayoshi's mother had a second child is an alternate-universe setting. Content warnings: 1. Contains depictions of psychological taboos. 2. The heroine is Hayato Gokudera's twin. Her family abandoned her on an isolated island for training, then sent her back to Italy. After a time, she escaped the Gokudera family's control. 3. The isolated island is a facility dedicated to training bodyguards who protect the leaders of the mafia. 4. The male lead is Sawada Tsunayoshi. One-on-one romance. Neither is a virgin, and they only realize their feelings after both are adults. 5. There will be taboo depictions involving Hayato that are difficult to define.