[Akifuji Satoshi] Sonzai Riyuu
Sonzai ga Nakunaru Kusuri ~Donna Koto Shitemo Daremo Anata no Sonzai ni Kigatsukanai to Shitara…. Anata wa Nani o Shimasuka? | 使存在消失的藥~如果即使在什麼地方誰也不會察覺到你的存在…。你會用來做什麼呢?
Yuukouteki na Shoutai Fumei no Sonzai 2 | Amicable Unseen Entity 2
Ohimesama no sonzai igi | 公主殿下存在的意义
(ToreTama002) [AlberCorp. (Alber)] Clarisse no Sonzaikachi (Granblue Fantasy) [English] {Doujins.com}
Inkya no Mesugaki wa Sonzai suru no ka?
Saikin Anzenhi to Iu Sonzai o Shitta Futari
Chikan no Sonzai shinai Subarashii Sekai Yuka-chan Hen