1. gacha tickets I guess, during some events u'll need elixirs and drinks tho so keep some pero
2. when u get an Event-Gatcha for special cards, mine mostly rot since free players dont get many..
3. yep it's much better to use em to get the 'limited cards' from Kurito
4.
- I've got all the cards by giving 1 gatcha, It took some time tho
- check
http://harem-battle.club/peropero-se...itos-nest.html
hf