【Caterpillar Education Window】A drowning petrel – above

This is an interspecies male homosexual BL work of humanoid avian shota x human penis.
I’ve been working on this for a few years now, and I’ve had a lot of fun with it.

-Summary
The story is about a young boy, Sakuya, who is still covered in innocent fluff and has been living a twisted life of dating and having physical relations with his adoptive father, Hikaru.
The story is about a young man who has been in a relationship with his adoptive father, Hikaru.

This is the first volume of a series of stories that will be followed by a top volume, a middle volume, a bottom volume, and a final volume.
This is the first volume of the series, which will be followed by a middle volume, a bottom volume, and a final volume. This volume is mainly about Sakuya’s supportive relationship (erotic), Sakuya and Masato’s interaction (non-erotic), and Sakuya and Hikaru’s sexual relationship (erotic).
The first part of the story is a bit uncomfortable, but the second part is a very loving intercourse with Hikaru’s adoptive father.

There are 51 pages of text (excluding the cover and postcards), and 29 pages of erotic parts.
1 cover + 1 full-page cover illustration
51 pages of text + 1 foreword, 1 afterword
Total 55 pages