Updated to ver1.52a.

When saving to the memory box after completing an adventure, the spirit stone of the twin star was broken and
Fixed a bug that caused other items that were being held to disappear.
During testing, when using items from the memory chest of existing saved data, when breaking a twin-star spirit stone, an enhancement that was not originally there could occur.
However, the behavior is totally better than disappearing, so I will update it once.