I suppose you want to bloom Bipinna right?
Just farm the following Maps for Elixiers:
Map 1 drops Gold Elixiers
Map 2 drops Rainbow Elixiers
Farm the following Maps for the other Blooming ingredients:
That's all you need to bloom a Girl.
Bound Crystals are mainly for buying Danchou Medals, Second Affection Items and Equipment Manyus:
You will need a Blossomed Heart from the Life Crystal Shop (150 or 250 Life Crystals) to activate the second Affection Bar (it only works if your Girl already has 100 Affection)