One of the best, if not THE best Otome i ever played.
Very well made, i dont speak chinese but i managed to clear all dailies on the first day.
I use mainly Google translate and it's a great help for understanding whats going on besides that, i look up some nice ppl who translate Light and Night cards online.
Actually downloaded wechat but its free and I personally had no troubles to make a account (Im from europe but it should work with a lots of other countries). Light and Night doesnt care what country you are in as long as its a wechat account (remember to set your birthday to 18+ since its age restricted).
On my phone its around 3.90 GB but understanding the quality of the game its understandable that its large and takes a while to install.
The Gacha rate is pretty good as well and its easy to save up summoning currency (300= 1 pull, 3000=10 pull and after clearing the 5th story chapter you can farm 600+ per week plus 50 you get from finishing dailies and another 50 you buy with f2p currency (pink one) in the shop).
The only thing u cant do is spending money since you need chinese payment systems (which makes sense since ,well, its not global and China only.)
I wholeheartly recommend it for anyone who loves Otome!
Mentioned games