Believer
Follower
noun
A junior believer is a believer or follower. They certainly aren't the leader or anything because of their junior status, but at least they're there, and at least they're believing. Oh, and excuse me, may I take a moment of your time? I'd like to tell you about the glory that is the Crabigator....
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
トーフグにはたくさん信徒がいます。
There are many believers in Tofugu.
ワニカニの信徒数は、今、何人くらいだと思いますか？
About how many WaniKani believers do you think there now?
私の両親は、オウム真理教の信徒でした。
My parents were followers of Aum Shinrikyo religious cult.