Responses
The artist is Kisaragi Hirotaka, ori pic http://www.mangago.me/read-manga/kisaragi_hirotakas_artbook/bt/34627/Vol1_Ch0/27/
I'm not sure it's the 2nd pair of this http://www.mangago.me/read-manga/keep_out_kisaragi_hirotaka/
or it's this http://www.mangago.me/read-manga/uchi_no_tantei_shirimasen_ka/
http://www.mangago.me/read-manga/okusan_no_mousouteki_nichijou/mf/manga/okusan_no_mousouteki_nichijou/v01/c003/pg-2/