Artist: Yuzu Momo

Set some XX years after canon Gensokyo, this doujin introduces Reika, Reimu and Marisa's daughter, and her friends Olivia -- Remilia and Sakuya's daughter -- and Youki and Hiyume -- Youmu and Yuyuko's twin daughters.

Compilation ebooks:
Volumes 1-3: https://www.melonbooks.co.jp/detail/detail.php?product_id=236005
Volumes 4-5: https://www.melonbooks.co.jp/detail/detail.php?product_id=236007