What do the Chiisana items and the Ookiina items do that I get from breaking walls?

[bohorano]

When I break walls or barriers, sometimes these chiisana items and ookiina items drop. What do they do?

[xSHiNOx]

i think they might be monster parts. go to the guy in the sewers and see if he can make a weapon out of it

[bohorano]

Nope, they're not monster parts.

[Shiroyu]

They're nothing.

Really. Just sell them.

[Frokko]

They're sure are something. Got to be something good about them.
I want to know what it is...

[vidokou]

I got myself one in a red box, kagayaku to be exact, they're... COMPLETELY USELESS!

[Mike]

If it was a red box, it wasn't a fragment. The wall fragments only go up to 5 stars.

[vidokou]

I must have confused it with an element then, a case of mistaken identity, because the fragment is, indeed, 5 stars.

[vidokou]

and then i find a 6 star fragment:
暗黒の破片
which translates out roughly to 'Dark Fragment'

scratch that, it's an enemy part, one of those chess knight rifles