You Are Mine Alone [English], by Daigo

Let’s play stereotypes, shall we ? We’ve got a super-popular sister, a brother secretly in love with her and rather jealous, and ta-daaah, they discover they share a mutual love, and so they fuck. In the school exterior grounds, naked, on a week day I really liked the “hungry” expression on the girl’s face

As a bonus, a quote from the most uncool seducer in the whole year 2008 : “I, Shirai Kazuya, the King of handsome, am granting you the priviledge of becoming my tenth girlfriend”

(I share much more works by this artist, Cf. The list of Daigo’s works)

UPDATE : this now belongs to the completely translated manga Grind [English, 194 pictures]
The download links will be on the Grind page