On Friday, filmmaker Rakesh Roshan celebrated his grandson Hridhan Roshan's 18th birthday with a heartfelt note on Instagram, referring to him as his 'favourite young man.' Hridhan is the younger son of actor Hrithik Roshan and his ex-wife, Sussanne Khan. Rakesh shared a touching photo alongside his message, marking this significant milestone in Hridhan's life. Hrithik, who married Sussanne in 2000 and welcomed their elder son Hrehaan in 2006 and Hridhaan in 2008, is now focusing on his directorial debut with the upcoming film 'Krrish 4.' This film is a continuation of the franchise that Hrithik has nurtured for over two decades and is being produced by Yash Raj Films in collaboration with Rakesh Roshan. Additionally, Hrithik is making his entry into the OTT space as a producer with a thriller series titled 'Storm,' set in Mumbai, which will begin production soon under the direction of acclaimed filmmaker Ajitpal Singh.