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Oshika Orario 5.3
Release Notes

On January 26, 2026, Oshika Orario 5.3 (hereafter referred to as “Oshika 5.3”) was released.
This page introduces the improvements and enhancements included in the version upgrade.

* Click here for the Japanese version of the Release Notes.

Major Functional Enhancement

  • Operational Improvements

  • Bug Fixes

How to apply for a version upgrade

  • For customers who have contracted maintenance services

  • For customers who have not contracted maintenance services

Contact us

  • For inquiries regarding purchasing, version upgrades and functions of Oshika 5.3

Major Functional Enhancement

Operational Improvements
  • When launching Oshika tools from ACTY'S, the tool screens (Scheduling Parameter screen, Skill List screen, and Skill Editing screen) are now always displayed at the center of the ACTY'S screen.
    This enables users to start configuration tasks more smoothly, thereby improving work efficiency.

  • The sound effect played when displaying the Oshika version information screen has been removed.

Bug Fixes

The following issues that were present up to Oshika 5 have been addressed.

  • Fixed an issue where the resources required for fixed bars (bars belonging to non-editable groups) with workload-based planning set were updated when performing schedule calculations in Simplified Kamui.

  • Fixed an issue where, if the Time Now set in the bar chart (ACTY'S data) was outside the editing period, midnight of the PC system date would be set as the current date and time. Now, the date and time obtained by rounding down the PC system date to the minimum calendar unit (truncating below the minimum unit) will be set as the current date and time in the scheduling parameter.

  • Fixed a bug that caused abnormal termination when locking an activity enclosed by normal constraints between activities connected by thick line constraints.

  • Fixed an issue where the calendar for the relevant activity was not applied to the “Leveled Early Start” and “Leveled Late Finish” values when saving schedule calculation results as scheduling parameter storage information in the Notes field.

  • Fixed an issue where performing scheduling calculations with the same sort conditions could result in a different scheduling order.

  • Fixed an issue where unrelated warning messages could appear when launching the tool from a bar chart containing connection lines of group bar.

  • Fixed an issue where activity calendars were not applied during total float calculations in simplified Kamui.

  • Fixed an issue where performing schedule calculations in simplified Kamui could result in the Early Start date falling on a holiday.

  • Fixed an issue where backward scheduling could result in an incorrect finish date if the schedule was shifted due to the start calendar.

  • Fixed an issue where the Late Finish could be calculated without taking the start calendar into account when performing backward schedule calculations.

Other minor operational issues have been fixed.

Please also refer to the Oshika 5.3 “Reference Manual” for details on each function.

System requirements

Please check this page for the system requirements.​

How to apply for a version upgrade

For customers who have contracted maintenance services

User Support will send you an e-mail with instructions on how to apply for a version upgrade.

Please apply for the version upgrade using the application form provided in the e-mail.

E-mails will be sent out sequentially from the date of release.


For customers who have not contracted maintenance services

Please feel free to contact our sales representative for inquiries regarding version upgrades.

Contact us

For inquiries regarding purchasing, version upgrades and functions of Oshika 5.3, please contact us using the inquiry form.

Customers who have contracted maintenance services can also contact User Support.

(Last update: January 26, 2026)

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