Vol 15
https://files.catbox.moe/cbzb6x.pdf
Vol 16
https://files.catbox.moe/di8889.pdf
Manga
https://mangadex.org/title/a871a3a2-aa04-4fff-8dac-a6ec969b54d1/ore-no-imouto-ga-konnani-kawaii-wake-ga-nai-kuroneko-if