"Skip ticket issue robot" of "Otasuke Robo" in the shop is a billing item that you can get 30 skip tickets for 10 days.
[Skip ticket issuing robot] can be purchased for 480 yen, and you can get 10 skip tickets each time you log in. If you log in every day, you can get 1 skip tickets in a month.
Should I buy a skip ticket issuing robot?
I think you can buy a skip ticket because it is necessary to collect Seoul efficiently, but you can get it by clearing missions and EN recovery at Chrono Crystals, so if you do not have enough, you can buy more tickets. It might be okay.
How to use skip tickets and how to get them
I bought a robo because Super Soul doesn't drop at all, but it's a hassle to have 1 pieces a day. Next time I can only buy one month later, so I want to get 10 sheets at once ('・ω・`)