[Yokoyama Naoki] Sleipnir ~ Kyousei Suimin Keitai ~ (COMIC Grape Vol. 6) [English] [Facedesk] [Digital] [よこやまなおき] スレイプニール ～強制睡眠携帯～ (コミックグレープ Vol.6) [英訳] [DL版]

[Yokoyama Naoki] Harpy3 ~Saimin Kanyuu Keitai~ (COMIC Grape Vol. 22) [Chinese] [Den個人漢化] [Digital]

[Yokoyama Naoki] Seiren ~Gakuen Saimin Keitai~ (COMIC Grape Vol. 1) [English] {Cutegirls} [Digital]

[Yokoyama Naoki] Harpy ~Shuudan Saimin Keitai~ (COMIC Grape Vol. 13) [Chinese] [Den個人漢化] [Digital]

[Yokoyama Naoki] Sleipnir ~ Kyousei Suimin Keitai ~ (COMIC Grape Vol. 6) [Chinese] [Den個人漢化] [Digital]

[Grace (Yokoyama Naoki)] Yokoyama Naoki ni yoru Yokoyama Nao no Eroi Hon (THE IDOLM@STER MILLION LIVE!) [English] {doujin-moe.us} [Digital]

[Yokoyama Naoki] Sleipnir ~ Kyousei Suimin Keitai ~ (COMIC Grape Vol. 6) [Chinese] [Den個人漢化] [Digital]

[Yokoyama Naoki] Harpy ~Shuudan Saimin Keitai~ (COMIC Grape Vol. 13) [English] [naxusnl] [Digital]

[Yokoyama Naoki] Seiren ~Gakuen Saimin Keitai~ (COMIC Grape Vol. 1) [Chinese] [Den個人漢化] [Digital]

Sleipnir ~ Kyousei Suimin Keitai ~

[Yokoyama Naoki] Harpy2 ~Saimin Choukyou Keitai~ (COMIC Grape Vol. 19) [Chinese] [Den個人漢化] [Digital]