wait

Its a promo so it's only a novel not a comic the title is " The Hero Proposed to Me". Promo was made to promote the novel
(´∩｡• ᵕ •｡∩`)

thank youuu

Probably from the daughter of the Archmage manga.

The Archmage's Daughter

Its a novel and like the other guy said its "the hero proposed to me"

Unfortunately The Archmage's Daughter had to dropped, because the original artist/writer found out about it being translated from people posting the screenshots on Instagram.