This is the 2085th most frequent Japanese word.
同人
"Doujin" refers to self-published works, often magazines, comics, or novels, typically created by amateurs or fans.
Here, '同人' refers to 'doujin' as in self-published works, commonly manga, novels, or art.
私は同人誌をよく購入します。
I often buy doujinshi.
In this sentence, '同人' refers to doujin-related activities or pursuits such as creating self-published works or engaging in fan art.
彼の趣味は同人活動です。
His hobby is participating in doujin activities.
Here, '同人' is used to refer to a group or club (circle) of people sharing interests in doujin works or activities.