Here are some tips to keep in mind when downloading Kyoudai ni Okeru Seikoushou no Kiroku:
最も確実で安心な方法は、正規の同人誌販売サイトで電子版を購入することです。 download kyoudai ni okeru seikoushou no kiroku extra quality
According to the MangaUpdates listing, the official product page for the manga is on Melonbooks, a major Japanese retailer specializing in doujinshi and adult manga. Their product ID is provided (266810). Here, you can purchase a physical copy or, if available, a digital download. This directly supports the artist, Inariya. Note that the website is in Japanese and may require a proxy or forwarding service for international shipping. Here are some tips to keep in mind