The legality is clear: unless the file is in the public domain or you have explicit permission, downloading copyrighted movies from these unlisted, unofficial directories is a form of piracy and is illegal in most countries. This action violates the copyrights held by the film's producers and distributors.
You can rent or buy a digital copy of Piku for a very low fee, giving you lifetime access or a 48-hour viewing window in full HD with verified subtitles. index of movie piku upd