I must say, you can never have too much Yuri (in any capacity, be it multiple couples in one work or many works). I also like that this isn’t a ”situational” Yuri where only girls exist so it’s the only option. There are boys that exist in the background but don’t get many appearances because they are unimportant.
Some people like having some hetero couples to make it seem more realistic… but I say just Yurify everything no such thing as too much Yuri. You want hetero read that, in this manga the parents are good enough!

