The Witches of Adamas Vol. 1 (manga)

A Mature-rated comedy that gives new meaning to "the family jewels"!Satou Yukinari has a very strange medical condition: he ejaculates diamonds. But like all fortunes, it comes with a price. These special gems are worth untold riches, but each one he spurts out cuts a year off his life span! As word spreads of his condition, a trio of beautiful seductress witches descends, starting in his hospital room.

Yukinari must overcome sexy but deadly temptation if he wants to live, but boy these witches are persistent!