Summary from Renta!
The moment Rio meets the boy with the grey eyes and gets kissed by him, he knows that his life is going to change. With a letter in his hand, Rui comes to visit Rio, worried that Rio might be feeling lonely and sad. Rui touches Rio's face as if to console him and kisses him again and again. At first, Rio is confused by the kisses and doesn't know how to react. However, as days goes by, Rio realizes that Rui's desire and kisses are actually bringing him comfort.