Images 56-82 are based on the mahou shoujo anime Mahou no Idol Pastel Yumi (one of the 4 classic majokkos from Studio Pierrot, together with Creamy Mami, Magical Emi and Magical Fairy Persia).
And it's also done by Taya Takashi, my favorite doujinshi artist from the 80's.
It's a pity it features Yumi-chan's father and mother and not herself.

Base +8

Nice find. Please upload "Look Out 27" if you ever come across it.

Base +9

https://www.doujinshi.org/book/1076364/LOOK-OUT-19/

Base +10, adoggo +6