Age Gap BLs

[ 25 y/o university student x 37 y/o businessman, 12 year difference ]

[ 20 y/o university student x 32 y/o salaryman, 12 year difference ]

[ 21 y/o university student x 30 y/o high school teacher, 9 yr difference ]

[ 24 y/o student x 34 y/o yakuza, 10 yrs difference ]

[ 20 y/o working student and mid-30s mob director ]