Love enters your heart
as a fancy character
filled with butterflies

^^ this part sounds good.

and can leaves it as a soul
when migrating its body

^ the part about and can leaves it sounds awkward.

may be leaves would sound better as" and can leave it as a soul" or just " leaves as a soul"

love enters your heart
as a fancy character
filled with butterflies
and leaves as a soul
when migrating its body.