Complex sentence: In the final episode, Takumi gained mental disorder due to emotional depression and considers Hayami as his mom, he saves Hayami from being killed by the village elder and decide to move in Tokyo with Hayami.
Split into simpler sentences: In the final episode, Takumi gained mental disorder due to emotional depression and considers Hayami as his mom. He then saves Hayami from being killed by the village elder and decides to move in Tokyo with Hayami.