The artist's pixiv: https://www.pixiv.net/en/users/49287
Original work: https://www.pixiv.net/en/artworks/90276291

I used DeepL etc. to translate this while making sure it is coherent and keeping to the original work. Please, if there's any corrections I need to make, tell me and I'll verify and change it.

Chapter 1-4
Chapter 5
Chapter 6
Chapter 7
Chapter 8

Where's Erika?

Base +7

@Loki The Flameshield

Erika's a kohai. If you looked at the ties in ch 3,4 and 6, Erika and Ayame have different colored ties than the other girls in their human forms. That indicates that they are from different years. This is common in some anime as well.

Base +7

Christ, those last two images are morbid. A decade of being on this site, and this is what fazes me. What even.

Base +6