This is a DLC for the main game - "Grow a Carrot" - https://store.steampowered.com/app/2794860/Grow_a_Carrot/

"Detective Support - Grow a Carrot" is a DLC for "Grow a Carrot" in style of a visual novel with minigames! Explore bizzare lore of bunny island! Meet your favourite bunnies! Get to know who you are...

https://store.steampowered.com/app/3238280/Detective_Support__Grow_a_Carrot/