I can't become light, I can only borrow strength by force

This book is also known as,, Jiang Xia who traveled through the world of Tiga, gained the ability to borrow power from others. As long as it is a living creature, there is nothing I can't borrow. Brother Dagu, lend me some light. Wait, how did I become Dark Tiga! I am afraid, Tiga, you old fool, poisoned the light! I can't become light, so I am forced to become Dark Tiga! ...