pupil; disciple; adherent; follower; apprentice; young person
older sister and younger brother
king's younger brother; royal brother
children; sons; (lit.) children and younger brothers; young people
brother-in-law (spouse's younger brother or younger sister's husband); younger stepbrother
one's younger brother; underling (e.g. in yakuza); junior male peer; sworn younger brother
(one's) younger brother; foolish younger brother
disciple; pupil; follower
best pupil; leading disciple
younger half-brother (by a different mother)
younger half-brother (by a different father)
filial piety; brotherly love
little brother; younger brother; my younger brother; I; me
one's deceased younger brother
both people are superb in skill (and thus it is hard to rank them)
little brother; younger brother; my younger brother; I; me
older and younger brothers; brothers