Ritika is Suriya's sister?

As we had reported earlier, Suriya after ‘S3’ will be acting in a new film directed by Muthaiah of ‘Komban’ and ‘Marudhu’ fame for which the team has approached Keerthy Suresh and Ritika Singh as the heroines.
Latest reports coming in suggests that the subject of the untitled film is the bonding between a rural brother and sister and Ritika is expected to play the sister of Suriya while Keerthy Suresh will be his love interest. D. Imman will score music while Studio Green will bankroll the project in partnership with Suriya’s 2D Entertainment.