v3.25.2
Reverse Recapitalization and Acquisitions of subsidiaries - Goodwill (Details) - Next Finance Tech Co, Ltd. - JPY (¥)
¥ in Millions
Mar. 14, 2025
Mar. 10, 2025
Disclosure of detailed information about business combination [line items]    
Total identifiable net assets acquired ¥ 102 ¥ 102
Goodwill arising on acquisition   1,240
Total fair value of consideration ¥ 1,342 ¥ 1,342