The blessings of Hidden are endless

There are many Hidden. Is there a login bonus before level 5? That also has Hidden. Among healers, the SSR character called Emerald Lord or something is the best. Anyway, among SSRs, there's only that healer, so if you get it, raise it diligently and use it. It even revives a fallen character. There are walls at various stages in between, just... spend time on them or grind the 'War of Blood' or whatever it's called, the territory war where everyone fights a Yaksha. When you gather 💎diamonds 💎, you just have to pray it drops from the gacha. Since you get stronger by pulling a lot from the gacha, just put the characters with the most stars in your party and send out 5. I cleared the first chapter of the story with this (about 4-5 hours). For reference, you can put 3 in the front and 3 in the back, but it's a total of 5 people. Not 6. Then, I recommend 3 shield/axe type characters, 1 healer in the back, and 1 damage dealer in the back. Still, if you really want to put them in, you can put 1 shield and 2 damage dealers in the front, and then squeeze in 1 healer and a back-row character in the back. But shields can only be in the front row. You have to send other characters to the back.