Okay so, the scars are one of those ~things~ that should have been included but that I forgot about until far too late, and I don’t remember how much detail I went into in the story itself right now.

However:

So the biggest scar set is the one that results from Aizen’s kido that sends him back in time. The general rough area for that one is as follows

(forgive the roughness, that was done with a trackpoint and paint =P )

In appearance, it’s a lichtenberg patterning (like lightning-strike scars, but don’t look those up if you don’t like looking at human wounds because some of them can be nasty, instead just look up “lichtenberg figures” and you’ll see examples in wood and other inanimate objects) and at this stage they’re pale (paler than his skin) and shiny-smooth. That patch on his lower right arm is large and distinctive and is where the kido rebound “struck”.

These are not his only scars.

His lower left arm, the one that was cut off, has a distinct color difference in skintone. His lower left arm is brand new, after all, and doesn’t have the same level of tan as the rest (he doesn’t even have his old callouses, either, he’s been having to rebuild them during training). And the seam where old ends and new begins is a touch silvery like an old scar

The more RECENT scars are ones they’ve gain during the invasion as a result of improper use of heirro. They’re doing too much ‘hardening’ and not leaving enough flexibility, so when the heiro ‘breaks’ (because frankly they’re not that good at it yet, so it can be overwhelmed by a strong enough opponent) they don’t get standard slash or stab marks, but instead something that looks a lot like cracked safety glass. The biggest of those is lower left by his hip, right around where the lichtenberg patterning trails off. It... really turns his lower left hip into a mess of scars.

Hanataro’s been dealing with a lot of the heirro wounds so they won’t actually scar THAT badly in the long run, but his left hip area is uh.... a mess. And will probably remain that way.