咲子: a female given name

空き缶: empty can (container)

unnecessary to ask

to be concerned about; to be interested in; to be bothered by; to have a problem with

(idiomatic) Alternative form of 気が気でない

(idiomatic) very anxious, very worried, feeling uneasy; can't help but be worried

(idiomatic) Alternative form of 気が気でない

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening