How would things change with Train Heartnet being Nana's younger maternal half brother? This is also a crossover with D N Angel. Fem Tsuna and Daisuke/Dark pairing.

AO3 Blank Slate Series : Tick. Tock. Sometimes it takes being unlucky.

Out of all the things that could happen to him, being reincarnated into the body of a girl that just so happens to be the heir of a mafia famiglia was not one of them. Train Heartnet finds himself returning to old skills and making new alliances while trying to figure out what the heck he supposed to do now. The Underworld better prepare because the Black Cat is among them.

Train is hunting a bounty when he meets someone in a position he knows very well. TYL-Tsuna. Pre-slash.

Life is tough for young Tsuna Sawada however a certain blonde haired, magenta eyed girl makes it a little bit better (sometimes).

Nikki used to be friends with Gokudera until she disppeared. After that, they hadn't had any contact. When they finally see each other after ten years, how much has changed in her life, and why is she showing up now? Train/Nikki/Gokudera