Sanshikiniji

Himari is a writer who hasn't been able to produce a hit work and one day, because of some strange circumstances, Hodaka, a mysterious and beautiful boy came to live with her. Then there's her newly assigned editor, Kuga, who had asked her to try writing a romance novel and coincidentally, he just recently moved next door to her! A romantically inexperienced writer, an editor who is actually super shy inside and an airheaded younger boy whose hands (?) move faster than he speaks. This is the start of Himari's awkward and exciting days with two super hot men. source: https://www.mangaupdates.com/series/mo8envm/kore-ga-ryoute-ni-hana-desu-ka