A host of Bollywood stars, from Hrithik Roshan, Nawazuddin Siddiqui and Manoj Bajpayee to Vidya Balan, Sonu Sood and Jackie Shroff have come forward to promote a rare Maithili film, which won a National Award four years ago but could not find any takers either for a theatrical release or streaming on an over-the-top (OTT) platform.