▁The ▁Princi pal ▁phot ography ▁of ▁the ▁film ▁comm enced ▁in ▁around ▁December ▁ 2 0 1 8 . ▁ ▁Cast ▁▁▁ ▁Mah at ▁R ag hav endra ▁ ▁A ish w ary a ▁D ut ta ▁ ▁Y og i ▁Bab u ▁ ▁Raj end ran ▁ ▁Production ▁ ▁The ▁film ▁announ cement ▁regarding ▁casting ▁Mah at ▁R ag hav endra ▁in ▁this ▁film ▁was ▁revealed ▁in ▁around ▁November ▁ 2 0 1 8 ▁following ▁the ▁latter ' s ▁break through ▁in ▁his ▁career ▁by ▁taking ▁part ▁in ▁second ▁season ▁of ▁Big g ▁B oss ▁T amil ▁in ▁ 2 0 1 8 . ▁The ▁film m akers ▁also ▁ro ped ▁in ▁A ish w ary a ▁D ut ta ▁to ▁play ▁Mah at ' s ▁love ▁interest ▁who ▁was ▁one ▁of ▁the ▁hous em ates ▁of ▁Mah at ▁during ▁the ▁second ▁season ▁of ▁the ▁Big g ▁B oss ▁show ▁where ▁A ish w ary a ▁coinc ident ally ▁emer ged ▁as ▁run ners - up ▁during ▁the ▁course ▁of ▁the ▁show . ▁The ▁film ▁title ▁K ett av anu ▁Per ▁Ed ut ha ▁N al lav anda ▁was ▁taken ▁from ▁a ▁song ▁which ▁featured ▁in ▁Sil amb ar as an ▁st arr er ▁Sil amb att am . ▁The ▁first ▁look ▁poster ▁of ▁the ▁film ▁was ▁un ve iled ▁on ▁ 1 4 ▁January ▁ 2 0 1 9 ▁on ▁the ▁e ve ▁of ▁Th ai ▁P ong al ▁indicating ▁that ▁the ▁film ▁is ▁closing ▁in ▁on ▁the ▁post - production