https://www.dlsite.com/home/work/=/product_id/RJ239341.html
https://www.doujinshi.org/book/854989/

I like that there's another akyuu in the near future, as well that she's in contact with renko (so she can gave her the knowledge of her ancestor's story). It's kinda makes me think that the Hieda family is more wide than we thought, or maybe one of akyuu's reincarnation gave twins, one living in gensokyo, and the other living in the outisde world, and then trough the family line, she gave her the chronicles of gensokyo to another one and then, well... here we are.

Base +5