"This is a se..."quel to???

http://www.mangago.zone/read-manga/hada_no_ue_no_renai_jijou/ and http://www.mangago.zone/read-manga/zaiaku_wa_hada_no_ue_ni_dj_hada_no_ue_ni_furu_hana/ and http://www.mangago.zone/read-manga/pillow_talk_holiday/
A little late but better than never.

Thank you. It's really hard to look for her mangas. Shes published so many