Refers to the circular halo depicted behind sacred figures in Buddhist and other religious art.
仏像の後ろに円光が描かれている。
A halo is depicted behind the Buddha statue.
compensated dating; paid dating (with a minor)
Internet slang derived from the homophone 援交 (enjo kōsai). Often implies dating an underage girl and may involve sex. Strongly associated with online forums and youth slang.
See also: 援交
ネットで「円光」と書いて援交の意味で使うことがある。
On the internet, 円光 is sometimes used to mean compensated dating.