Yowai 5000-nen no Soushoku Dragon, Iwarenaki Jaryuu Nintei (Japanese Dub)
Plot Summary: A 5000-year-old vegan dragon was living peacefully when one day a young girl showed up in his cave. She offered herself as a sacrifice in order to gain favor for her village. He played along as the great "Evil Dragon, the Demon Lord's Army Leader" in order to get rid of her. However, his little white lie awoke her hidden powers and his peaceful life suddenly ended.
Other name: A Gentle Dragon of 5000 Years Old, It Was Recognized as an Evil Dragon Without Any Cause., Shi Cao Lao Long Bei Guan Yi E Long Zhi Ming, 食草老龙被冠以恶龙之名 ; 齢5000年の草食ドラゴン、いわれなき邪竜認定