The presence of "NSP" in your keyword suggests you are looking for a digital download of the game, not the physical cartridge.
For those unfamiliar with the terminology, "NSP" refers to a specific type of game content that is often associated with Japanese visual novels. The term "Convert" likely refers to the process of converting the game or its content into different formats, such as anime or manga.
Unless the developer officially releases a Switch version, fan-made NSP conversions are rare and often unstable.
At the heart of the narrative is the concept of single-minded love. In many romantic stories, this trait is viewed as the ultimate virtue. However, this title examines the practical reality of such intensity. When a partner’s entire world revolves around one person, the affection can become both a sanctuary and a cage. The "earnestness" provides a sense of being deeply valued, but the "jealousy" introduces a volatile element of control and insecurity. Jealousy as a Narrative Engine
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The game originally launched on PC (Windows) and was later ported to the Nintendo Switch. The Switch version includes additional CGs, voiced dialogue (Japanese only), and touchscreen support.