dark
冥 centers on deep, profound darkness: the absence of light, often with a sense of obscurity or the hidden. It describes literal darkness as well as the metaphorical darkness of the unknown or the underworld.
冥 originally depicted a covered space with a sun (日) inside, suggesting darkness or obscurity. The lower part 六 may have been a phonetic or semantic addition. The character conveys the idea of being shrouded or hidden from light.
The top 冖 is a cover, and below it are 日 (sun) and 六 (six). Imagine a thick cover thrown over the sun, plunging everything into six layers of darkness. 冥 is that deep, dark obscurity.
For メイ, picture a dark, moonless May night: May -> メイ, and the darkness is so thick you cannot see your hand in front of your face.
happiness in the next world; heavenly bliss; repose of one's soul
realm of the dead; the other world; underworld
hades; realm of the dead
Pluto (dwarf planet)
Hades; the underworld; the other world; realm of the dead
providence; luck; favor; favour; advantage
divine protection; divine blessing; providence
may your soul rest in peace; I pray for your happiness in the afterlife
dark; invisible
unawares; before one is aware
Hades; underworld; realm of the dead; other world
to feel blessed to be in one's position; to be thankful for one's good fortune
to receive too many blessings; to be excessively favoured; to be too good for
monetary offering (to a temple or shrine)
divine protection; divine blessing; providence
pleasant memory to take to the afterlife; good memory; something that makes one feel one can die in peace
shades of the dead
gloom; shade
dim and distant
Hades (god)