Originally Posted by Discoceris

No ... if zero affection while performing evolution ... you gain nothing. So you need to pump it to 100% before doing anything else.

Wow, then this will take quite a long time to max their affection before evolving, does the stats gain on affection after evolving does not increase also?

Pretty much... I'm focusing on one character per category for now (toys, books, etc.) and have 4 around 60% but I'm really low on presents.