<b>SIDE EFFECTS MAY INCLUDE INSATIABLE LUST</b> <p/>It's just another day of science at HXEROS Headquarters. Kirara and Shiko accidentally gulp down an experimental H-Energy drink. All revved up with nowhere to go they conspire to see which of them can make Retto explode with H-Energy first! Includes a special bonus chapter written by <i>To Love Ru</i> author Saki Hasemi!