The greatest oneshot of our times has returned as a serialization!!!! Yay fucking yay.
the oneshot perfectly used being oneshot, but by actually making it a continuation from the middle of the oneshot (isntead of starting from zero like I expected, or after graduation), we avoid most of th eproblems with the serialization, so I really like that approach.
Probably not. I think that's just something common to gyaru.
Yua doesn't have one in chapter 1 (p7) or the old photo in chapter 11.5 (p8|184). Reina has one in chapter 1 (p36). I'd guess that Yua saw them on Reina and Yazawa and got hers by chapter 3 (p15). Though, it's too bad we didn't get to see them bond over it.
Now, since they both have them, it would be cute if they got matching jewelry (other than the plain silver ones, which I assume were chosen for drawing simplicity).