一宿一飯

いっしゅくいっぱん

noun

•

(being beholden to someone for a favor of) a night's lodging and a meal(yojijukugo)

一	one, one radical (no.1)
宿	inn, lodging, relay station, dwell, lodge, be pregnant, home, dwelling
飯	meal, boiled rice

かれ

おも

とど

。

しょうしょう

いっしゅくいっぱん

おんぎ

かん

We got an unexpected present from him. I guess he felt a little obligated after what we did for him