At first, Sawaki wasn't sure what to think of his best friend Kei's transformation from ordinary-if-somewhat-girly boy to unabashed crossdresser with a now-apparent crush on him, but he's trying to adjust. Kei's been his best friend forever after all.
Of course, the way Kei kisses him, teasingly flicking his tongue over his lips, is helping him make up his mind whether or not he likes this change. That hot mouth sucking his neck, leaving marks down his chest, biting, moaning... he could get used to it. And those black lips wrapping warmly around his cock, sucking him with practiced precision and ease, those are encouraging him to be understanding as well. He likes the way Kei's throat yields as he bucks up, filling his mouth with hot cum. Kei swallows and swallows, milking him through it, moaning as he strokes himself under his skirts.
As Sawaki watches semen drip down Kei's smeared lips, he really thinks he can enjoy his old friend's new look on life.
Sawaki can't help it, he has to kiss that messy mouth roughly. Kei whines with desire as he's pulled into his friend's lap, but he silences him with his mouth. The heat of Kei's erection radiates against his stomach even through the layers of fabric between them.