clarence is associated with water and has at least ONE universe where hes a merman

clarence is a law student, azuls step dad is a lawyer

interdimensional space travel is an established part of both LBC and twisted wonderland

they both wear glasses??? COINCIDENCE??

LBC as a whole is basically an establishment of the fact that two people from different dimensions can fall in love and move permanently to another dimension

since azul specifically has a step dad that means they dont even have to LOOK related for this theory to work

Clarence's chinese name is Si Lan which means Diamond, what color are diamonds? blue. azul's name? is a shade of blue!! (..and is apperantly a girl's name? damn i guess azul's bullying had nothing to do with him being overweight, teenage boys just lock onto whoever sounds the girliest and start bullying them relentlessly)

azul thinks his stepdad is kind and helpful, who's ALSO kind and helpful? okay im running out if proof here