Ireland secure comfortable win in first World Cup game in eight years

Amee-Leigh Costigan, Neve Jones and Beibhinn Parsons and Fiona Tuite tries secure Ireland's bonus point before half-time

Haruka Hirotsu and Masami Kawamura on target for Japan

Superb Eve Higgins breakaway score and Enya Breen try extend Ireland's lead

Holders New Zealand face Spain in Sunday's other Pool C game (17:30 BST)