Persona 4 Arena Ultimax 2.5
Challenge Mode
Character: Shadow Junpei Iori
Challenge 30
Objective: do a 200-hit combo.

Combo:
- Numerical notation: (corner) 2D, 236B (clean hit recommended) ~ [6], Shadow Frenzy, 236B, 236A, 236AB, 236A (clean hit), 236B, 236AB, 236A (clean hit), 236B, 236AB, 236A
- Arrows notations: (corner) ↓ + D, ↓↘→ + B (clean hit recommended) (hold → during the move), Shadow Frenzy, ↓↘→ + B, ↓↘→ + A, ↓↘→ + AB, ↓↘→ + A (clean hit), ↓↘→ + B, ↓↘→ + AB, ↓↘→ + A (clean hit), ↓↘→ + B, ↓↘→ + AB, 236A
- Resumed combo: 2D, 236B ~ [6], Shadow Frenzy, 236B, 236A, 236AB, [236A (clean hit), 236B, 236AB] (repeat this last part until get 200 hits)

Detailed Explanation:
2D (start the combo not so close from the corner. The default position is Ok),
236B (as soon as Junpei recovers, do this move. You must get a clean hit from this move, otherwise it will be hard to continue the combo. Looks like you can continue the combo without the clean hit, but I'm not sure. The clean hit occurs when you start the move while Yu is not so close to you),
Shadow Frenzy (press ACD in the last hit from 236B to cancel into Shadow Frenzy),
236B (as soon the screen freeze ends do this move. It will be hard to continue the combo if the first 236B doesn't get a clean hit. You don't need to get a clean hit in this move),
236A (cancel the previous move in the last into this move. You always will get a clean hit in this move unless you delay the cancel. Not sure if the clean hit is required here to continue the combo),
236AB (cancel the previous move in the last into this move. You always will get a clean hit in this move unless you delay the cancel. The clean hit is REQUIRED in order to continue the combo)
loop start (from here you will just repeat '236A,236B,236AB' until you clear the challenge),
delay, 236A (this is the most important move from the loop. Clean hit is REQUIRED in order to continue the combo and you have to time it well to get it. You have to wait a bit before doing this move. The clean hit happens when this move hits Yu while he is about Junpei's head),
236B (cancel the previous move in the last into this move. Clean hit is not required here),
236AB (cancel the previous move in the last into this move. You always will get a clean hit in this move unless you delay the cancel. The clean hit is REQUIRED in order to continue the combo)
2nd loop repetition,
delay, 236A (like the previous 236A. Clean hit REQUIRED. Make this move hit Yu while he is about Junpei's head),
236B (same from last 236B. Clean hit is not required),
236AB (same from last 236AB. Clean hit is REQUIRED, but is automatic as long the cancel is not delayed),
3rd loop repetition,
236A (this move will clear the challenge, just make it hit for a few more hits).