Sita's exile in Valmiki's hermitage, the birth and training of her sons

Sita's exile in Valmiki's hermitage, the birth and training of her sons, Kusha and Lava, their performance of the Ramayana before Rama, Sita's ordeal to prove her purity, and her eventual disappearance into the earth, followed by Rama's renunciation of his mortal body and their reunion in the afterlife, culminated in the completion of the Ramayana epic. Make it cartoon but adult