KanjiJLPT N1
Remains

bone, body, corpse

Mnemonic

A skeleton clutches a waste bag stuffed with its own rotting flesh. These grim remains tell the whole story: as the body decayed, the skeleton desperately gathered every scrap into the waste bag, trying to keep itself whole — but only bare bones remain.
Additional thoughts
Picture the skeleton literally holding the waste bag like a trick-or-treat sack, but filled with its own lost tissue. The waste bag = everything disposable; the skeleton = what persists. Together they form the full Remains.
Quick recall
A skeleton hoards its decayed flesh in a waste bag — together, they are the remains.

Details

The keyword for 骸 is remains. This kanji refers to the physical remnants of a dead body, such as bones, a skeleton, or a corpse. It conveys the image of what is left behind after death—the skeletal framework or bodily remains that persist after life has departed. It carries a solemn, somewhat stark tone and is often used in contexts relating to death, decay, and the physical traces of the deceased.
On'yomi
がい、かい
Kun'yomi
むくろ

Used in vocab