(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

put away

spirit; mind; heart / mood; humor / air; atmosphere

a sign

(idiomatic) to care about something, to pay undue attention to something, to mind something which is a negative nuance, to worry about something

plain negative imperative form of 気にする: never mind!; don't worry about it.

to have an interest in something or somebody, to be inclined towards doing something

(idiomatic) to cause concern, to be worrisome, to be on one's mind / to be interested, to be curious