Every year, Suna has received an anonymous letter and chocolate on Valentine's Day. Every time, the letter says, "I don't need anything in return, but please like me." One day, Takeo senses a strange presence behind them, and meets the sender of the letter, Amami Yukika. After hearing about her longtime feelings for Suna, Takeo decides to help her!
all have a hot, molten core inside their hearts,
einen flammend heißen Kern
in ihrem Herzen,
tengan un núcleo ardiente en sus corazones
tengan un núcleo ardiente en sus corazones
dans nos cœurs,
dentro il loro cuore,
hanno un nucleo caldo, incandescente,
Todas devem ter um núcleo quente 
e rígido dentro dos seus corações,