[cota (Tanaka Hiroto)] Comics LO and Megastore chapters

Does anyone know the source of these manga? R18-G

(C82) [Takaradamashii (Gorgeous Takarada)] Otonari no Ibuki-san. (Original)

(C74) [Takaradamashii (Gorgeous Takarada)] Yura Yura Choppiri

[Ikaruganomiya (Umayadono Ohji)] - Ningyou Ai 2 ~Pygmalion Complex II~ (Rozen Maiden)

(C91) [Maid-tou (Tanimachi Maid)] Tsumi no Ishiki Takai-kei - Zenhan no Shou