animal/human
http://www.mangago.me/read-manga/ookami_san_to_eroi_koto/
http://www.mangago.me/read-manga/sentimental_garden_lover/
http://www.mangago.me/read-manga/julian_and_youth_a/
http://www.mangago.me/read-manga/how_to_spoil_your_dog_gintama_dj/ (warning: HARDCORE)
http://www.mangago.me/read-manga/kuroneko_kareshi_no_asobikata/ and series
http://www.mangago.me/read-manga/eto_irokoi_zoushi/
http://www.mangago.me/read-manga/pero_pero_chan/
http://www.mangago.me/read-manga/ookami_wo_karu_housoku/
http://www.mangago.me/read-manga/itoshi_no_momonga_kareshi/
http://www.mangago.me/read-manga/hakuyou_ayakashi_gatari/
http://www.mangago.me/read-manga/kitsune_no_tama_yobai/
http://www.mangago.me/read-manga/mauri_to_ryuu/
http://www.mangago.me/read-manga/suzume_favorite/
It's about a violet cat/dog who turn into a human. That's kinda vague. But still, recommend me something like that~ thanks