Generous in game source of premium currency. Enemies relatively easy, just right for casual game. Grinding for weekly event isn't as chore as most other gacha games and they give decent reward for casual players. The gacha rate decreased by 1% compared to release time but in general every pull gives reward for progressing stronger, event the duplicates. The girls are criminally adorable. Bug are mostly gone at patch 1.2.1. Even the download is working fine on unstable connection, unlike before.
Download error always show up even with good internet connection. Please fix
Don't release a buggy game
many bugs cannot log in cannot download update after first time draw get stuck