Ahh, you're up to Razzy. Let me just say that she is a really tough opponent. Even with a drill and healing spell, I had a super hard time beating her. She is extremely fast for a boss at this stage and she blocks very little (which is annoying if you're trying to block her attacks). If you're just trying to beat her, it should be considerably less annoying. Try to avoid her attacks as much as possible. Her combo attack will knock you off your feet and do major damage. Once you get hit by her even once, she'll throw you into that combo, so dodge her as much as possible. Try blocking and then hit once to force her to block and then do a down+a continuous attack whenever she blocks. This'll help for a weapon break. If you don't want to get the weapon tech, then dash forward at her and when she jumps over you, get in a few good attacks and then back step as far as you can. Wait for her attack to finish from a distance and then move in again for another attack the same way.

If you already beat Razzy, then my advice is that when you fight Ariel and Mariel, BREAK HER DRILL and get her weapon tech. This is literally THE most reliable weapon to use until Day 8 or 9.

I didn't expect that to happen, and I think I'm correct in saying that he's the guy who helped Tsuna + gang hide in the future arc after Haru said that an old women who owned someplace would help hide them but when they got there this guy was there and used some power to make the guy after them think they were miles away in a different direction.