This asset is SD Unity-chan's Derivative "SD Unity-chan Haon Custom series".
This series is covered by the 'Unity-chan License'. Commercial use is available.
View Unity-chan license
SD Unity-Chan Haon Custom uses the same format. You can check the format of this series with free assets.
▶ SD Unity-Chan Haon Custom Bundle
Check out the screenshots for model and texture information.
▶ Parts info spreadsheet - Package abbreviation "Official Thema"