It is... all? Just this? Blooming Heart cost only 150 Life Crystal and even if there is a limited amount in LC shop, a large amount of it is almost useless since 2nd affection gift are super rare and limited too. It's even easier to get Blooming Heart than 2nd affection gifts.
And anyway... why? It's almost impossible to max a girl 2nd affection right since gifts are not available. So, why? Just why? it's like giving FG without gacha available. Or personnal equipment slot without CSQ. Oh wait...
Nice joke Nutaku. Just NEVER CHANGE.