No Rakesh. Lakshmi's Novel Pen Manam was made as Iruvar ullam. Kulamagal Radhai is Akilan's Vazhvu Enge.
some more to add. Kalki thyaga boomi, Kalvanin Kathali, Jayakanthan yarukkaaga azhuthan,unnai pol oruvan,kaval deivam,oru nadigai nadagam parkiral,mu.varada rasan petra manam,akilan kayal vizhi, jaya mohan ezhavathu ulagam, magarishi ennathan mudivu,vattathukkul sathuram,pathrakali , hema anandha dheerthan mannippe kidaiyadhu,kamala sadagopan kadhavu, indhra parthasarathy kuruthi punal as kan sivanthal man sivakkum,anuradha ramanan sirai, uma chandran mullum malarum, pudhumai pithan sitrannai, ponneelan poottatha poottukkal, siva sankari nandu,oru manithanin kathai,47 natkal,manian idhaya veenai,ilavu kaatha kili, idhaya malar, perumal neruppu as aval oru thodarkathai,Plenty more.