He defeated Ryuta Arihara (4-1) and Mitsuhiko Tatsunami (5-3) among others on his way to the title. Earlier in the weekend, Lim had also won the Bud Brick Memorial.
The women's Japan Open title went to Suzuki. The two-time world champion was too strong for Aoki Mayu (4-0) and Yoko Tsuku (5-0) among others.
Results Japan Open
Mitsuhiko Tatsunami 4-0 Ryuki Morikubo
Paul Lim 4-1 Ryuta Arihara
Paul Lim 5-3 Mitsuhiko Tatsunami
Mikuru Suzuki 4-0 Aoki Mayu
Yoko Tsukui 4-3 Kasumi Sato
Mikuru Suzuki 5-0 Yoko Tsuku