Crimson Turtle

Crimson Turtle is one of Nana's animals, as it looks a gigantic tortoise with horns on its shell.

Plot
It appears in the chapter 135 of To LOVE-Ru at the end of the giant board (created from Momo and Nana) that Rito and his friends play in a virtual space similar to the Trouble Quest game. Saruyama is the winner of the board and Nana reveals the prize is the Crimson Turtle as explaining she knows that in Japan having a turtle means good luck. However, it tries to almost eat the boy.

Trivia
It doesn't appear in anime.