Breakdown of kosame ni narimasita. kaisisite imasu.
いるiru
to exist; to stay; to have (used for living beings)
にni
at; on; in; to; for [indirect object particle]
なるnaru
to become
小雨kosame
Nihon-shiki romanizationwatasi ha tyuugoku kara kimasita
Hepburn romanizationwatashi wa chuugoku kara kimashita
