Manyuda appears to be a cold, ruthless, and calculating person. He is an extremely prudent and observant gambler, as he always takes the high road, which he himself often notes. His mindfulness allows for him to predict his opponent's actions and he often wins due to this. However, it is revealed he has insecurities, specifically, a deep fear of being deemed worthless and discarded. He won't allow for that to happen, no matter what the circumstance. In this aspect, he and Itsuki Sumeragi are very similar and he shows a bit of appreciation for her tenacity.
(Source: Kakegurui Wikia)
