Short hair was a flashback about their college days when they were actually a couple.
The beginning of the chapter was a flashback about their break up. Aya's being in her period is when we're in the present again.
Aya had long hair since the first chapter, you might be confusing her with Moe who has short hair. Aya and Risa also aren't together. They used to be in the past but they're not currently
Aya has had short hair in the flashback of chapter 24. OP was confused by that
Ah okay, I thought they meant Aya had short hair up to around Chapter 20 but they just meant that chapter then
That up to chapter 20 does sound confusing after a reread, so I'm not too sure myself.
btw I just noticed I said that Aya was on her period this chapter, but it was Risa.
hahaha yes, well hopefully we explained what they were confused about
Ah, I see it now. So the "marriage" chapter was a flashback, after all. I thought that was in the present, since they were pretty flirty, up to that point, and on that chapter It looked like she accepted a different planned future with Risa. Also, I thought the haircut was to mark the start of her new self (with Risa). Thanks for clarifying, guys.
Also, sorry for the confusing "up to ch 20" part. English is not my native language, so I tend to make mistakes like that when phrasing.
Wait, I'm confused...
Did we have a timeskip or its a flashback? Aya had short hair up to ch. 20-something, and she was happy with Risa. Now she has long hair and they break up? Eh?