I forgot the name of a shoujo manga that i was reading

it involved a girl who did sword dances and the mansion of this old lady friend of hers gets attacked by robbers and while defending the mansion meets this demon boy from another world who cannot survive in this world without the air purifying qualities of a certain necklace/choker thing the girl wears the necklace/choker thing and it turns her into a little girl.

oh just remembered the species from the demon boy's world bring good luck to those who own them so the old lady friend's family had locked this demon boy up in their mansion for decades/centuries

and ideas would be helpful thnx

The GaGa Law: (RAH)² (AH)³ + RO (MA + MAMA) + (GA)² + OOH(LA)² = Bad Romance

This manga is Lost - Ikai no Kemonotachi.

Avatar by tassyn.livejournal.com

Reading: Kingdom, Sangokushi, Historie

that's it! thank you!

The GaGa Law: (RAH)² (AH)³ + RO (MA + MAMA) + (GA)² + OOH(LA)² = Bad Romance