Revenue (Details Narrative) - JPY (¥) ¥ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Revenue from Contract with Customer [Abstract]
Revenue expected to be recognized from remaining performance obligations	¥ 1,228,733	¥ 764,933
Revenue remaining performance obligation	¥ 523,536	¥ 351,937

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details