the gathering of cigarette butts

park that is designated by nation and maintained by prefecture (in Japan, 都(と)道(どう)府(ふ)県(けん) (todōfuken)) or other local government; quasi-national park

(idiomatic) to look after someone's affairs after someone dies / to collect ashes of the deceased

(chiefly Internet slang, derogatory) mass media that are considered corrupt or otherwise somehow bad; fake news media

to retire

one's own younger sister / the wife of one's younger brother; one's sister-in-law / a younger female / (archaic, said from a male speaker) one's sister regardless of age difference

Same as いみ (imi) above

someone else's younger sister

India (the country)

debt / obligation, liability