As far as I can tell, this is the cover page to a short comic in a book called Planet Walk (惑星さんぽ), so I think this belongs to "toi8"? I can't say for sure though
As far as I can tell, this is the cover page to a short comic in a book called Planet Walk (惑星さんぽ), so I think this belongs to "toi8"? I can't say for sure though