少

rare animal

under-reporting (e.g. income on a tax return)

karma from a previous existence

insufficient (money, etc.)

medical reformatory

female juvenile delinquent

exclusive cut (of meat); rare cut

young and energetic; up-and-coming

juvenile classification home; juvenile detention facility

member of a sexual minority; LBGTI person

death comes to old and young alike; uncertainty of life

Work of art, literature, music, etc. name

Heidi (1881 novel by Johanna Spyri, 1974 anime)

Organization name

Kurihama Reform School

advanced juvenile training school; special reformatory; juvenile hall for grave offenders

Computing

floating-point number

Organization name

Kantouiryō Reform School

small claims lawsuit

virgin; maiden pure in heart

Idiomatic expression

all pain and no gain; lots of pain and not much gain

being young and spirited; being young and full of go

fewest ever; fewest on record; record-low

energetic

juvenile offender; juvenile delinquent

at least