Ryuusei Kawakami has won 13 youth titles as of December 2025. He has not won any senior titles. He won his first you title at the U13 WTT Youth Contender Platja d’Aro in 2022.
Youth Titles:
WTT Youth Contender Podgorica 2025 (U19)
WTT Youth Contender Podgorica 2025 (U17)
WTT Youth Contender Varazdin 2025 (U17)
WTT Youth Contender Prishtina 2025 (U17)
WTT Youth Contender San Francisco II 2025 (U19)
WTT Youth Contender San Francisco II 2025 (U17)
WTT Youth Contender Varazdin 2024 (U17)
WTT Youth Contender Gangneung 2024 (U17)
WTT Youth Star Contender Podgorica 2024 (U15)
WTT Youth Star Contender Singapore 2024 (U15)
WTT Youth Contender Hong Kong 2023 (U15)
WTT Youth Contender Platja d’Aro 2022 (U13)
ITTF World Youth Championships Cluj-Napoca 2025 (U19)