HARVESTELLA has received several updates since its 2022 release to improve loading times and performance. You can find technical details and version logs on the Harvestella Switch NSP UPDATE - Google Docs .
A standard installation including updates can exceed 10GB. General storage guides for these lists are available on Nintendo Switch Game Size List. HARVESTELLA Switch NSP/XCI [Update] (USA/ASIA)
If you are managing your library via CFW, you should be aware of the storage impacts: HARVESTELLA has received several updates since its 2022