Shop
Shop is a common feature in the The Legendary Starfy series, starting with Densetsu no Starfy 2.
Lovely's shop
The shop of Densetsu no Starfy 2. Costumes and pictures can be bought there. It is unlocked by completing the level Lovely appears in.
Jojiro's shop
The shop of Densetsu no Starfy 3. Costumes can be bought there and music can bought after the player defeats Ogura at least once. The shop is unlocked by completing the level Jojiro appears in.
Manianko's shop
The shop of Densetsu no Starfy 4. Costumes and extra HP can be bought there. After the player beats Dejiru at least once music can also be bought. It is unlocked by completing the level Manianko appears in. Apparently, according to the Japanese name of the Shop it used to be Lovely's Shop, however 'Lovely' is crossed out and replaced with 'Maniankou'.
Moe's Case
The Shop in The Legendary Starfy can be accessed from Moe's Case. According to the message the player receives after purchasing every item in the Shop, it is run by Moe. It is available from the beginning of the game and only sells Stuff.