This gallery features all artist's artworks from Fanbox and Fantia save for the following:

Gallery with all images of Kaguya Shirayuri: https://e-hentai.org/g/2613838/4af5ecb092/

Gallery with artist's original character Sena-chan: https://e-hentai.org/g/2614355/a83ce22d42/

Colored manga from the author: https://e-hentai.org/g/2613875/23f32da40b/

Artist's contacts:

FANBOX: https://niwatori0048.fanbox.cc/posts
Fantia: https://fantia.jp/fanclubs/28331
PIXIV: https://www.pixiv.net/en/users/4721
Twitter: https://twitter.com/niwatori0048

Please, support the artist if you can.