Like Hinako he doesnt have good air attacks and have to pre-emptive to be useful. His jD is good at keeping enemies down but you cant activate it late. Same with his CD attack, has to be early to be effective. It also seems that it has a downward hitbox which is why it loses out to other CD attacks.
Other then that he is a good character and quick but lack of a good AA so you have to learn how to space and be abit better at defense. His combo arent that damaging and if you want to add his cB, cC combos you have to be really close cos cC has a small hitbox.
To me sA, neutral jump D and rdp +A/B/C are good keep away tools. You have to have some idea on how rdp attacks hit since it can hit in the front or the back.
Like Kyo-1, just have to work for his damage (outside of using DM's)