https://www.hfmgroup.jp/activity/detail/soroban-autumn-cup-2026 2026-10-14T00:39:56Z https://www.hfmgroup.jp/activity/detail/youth-soroban-2026 2026-10-14T00:40:26Z https://www.hfmgroup.jp/activity/detail/soroban-autumn-cup-2025 2026-10-14T00:39:45Z https://www.hfmgroup.jp/activity/detail/hfm-group-cup-8 2026-10-14T00:40:37Z https://www.hfmgroup.jp/activity/detail/youth-soroban-2025 2026-10-14T00:39:34Z https://www.hfmgroup.jp/activity/detail/hfm-cup-2025 2026-10-14T00:39:23Z https://www.hfmgroup.jp/activity/detail/naniwa-shonenin 2026-10-14T00:38:49Z