KanjiJLPT N2
Total Darkness

get dark, gloom, disorder

Mnemonic

You pass through a massive gate that slams shut behind you. Every trace of light vanishes. All that remains is sound—dripping water, your own breathing, echoes bouncing off unseen walls. Without sight, sound is your only proof you still exist. This is Total Darkness.
Additional thoughts
Picture a gate sealing you inside a cavern so black that sound becomes your sole sense. The gate traps you; the sound defines the void. Gate + Sound = absolute absence of light.
Quick recall
A gate slams shut, leaving nothing but sound echoing through Total Darkness.

Details

The keyword for 闇 is total darkness. This kanji refers to complete, impenetrable darkness where no light exists at all, evoking a sense of pitch-black obscurity. Beyond its literal meaning, it is also used figuratively to describe secrecy, hidden dealings, or the black market—anything that operates unseen and outside the light of public awareness. It conveys a deeper, more absolute darkness than ordinary dimness or shadow.
On'yomi
あん、おん
Kun'yomi
やみ、くら.い