Complex sentence: Child Artist "Niranjana" plays the lead role in the show who was formerly seen essaying the role of "Janikutty" in the show "Manjurukum Kaalam" on the same channel.
Split into simpler sentences: Child Artist "Niranjana" plays the lead role of the show. She was formerly seen essaying the role of "Janikutty" in the show "Manjurukum Kaalam" on the same channel.