Naruto: Shinobi Collection Shippū Ranbu became a dating simulator titled Naruto: Love Generation on April Fools. (Although only the title screen and main menu changed, with "Shinobi" and "Missions" becoming "Staff" and "Order", and it featured the linked storyline)
Partially unrelated, but for those curious, Bandai Namco also did a dating sim joke on the Japanese version of Dragon Ball Z: Dokkan Battle.