幸福のケーキ

https://lh3.googleusercontent.com/-8yLTfwgIA5U/ZT06ozM08sI/AAAAAAAACsE/E6ObX9CwCKsJ_7cRj51SNcLuLpQfu-dzgCNcBGAsYHQ/s0/br-Tina-幸福のケーキ-64600.jpg

It's first appeared in Dolce Gacha, but I still mark it as a Birthday Suit.