Sometimes, when you don't go straight to the event site of your partner (marked with "!"), and you visit another places and duel with another character's (in the same day), the completed Heart of your partner will vanish, the mark of the event will disappear in the map and the Game will not let you fill that Heart again (regardless of how many positive interactions you do with him/her in the next days via gifts.) To rectify this, you need to invite that person to the tag team duel tournament
Giggling Villain: It's not that bad, though
On the other hand, wouldnt it be exciting if they were hard to get at home
Monsters that can be summoned from the current EX Deck are excellent across the board
Assembling a full set of TKN4 has been something collectors have struggled with, as its a very difficult undertaking
If you dont mind getting a little messy, this card could be a good source of counters