Greetings from the Onigiri Service Team.
The details of the 5/1/2025 JST update are as follows:

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Bug Fixes

・As it was identified that the per-unit price of the [Life Sigil of Luck] and [Life Sigil of Great Fortune] 3-piece sets was equal to or higher than the price of individual units during the Shopping Plaza Sale, we have decided to temporarily remove these bundles from the sale.
　We will provide further information regarding compensation for customers who purchased the 3-piece sets during the sale as soon as the details are finalized.
　We sincerely apologize for any inconvenience this may cause and appreciate your understanding.

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Thank you for your attention!
※Update details are liable to change without warning and may not reflect in-game.

Thank you for your support for Onigiri!