★ 4.0
★ 1.0
★ 2.0
★ 5.0
★ 6.4
★ 4.7
★ 2.3
★ 5.4
★ 5.3
★ 3.2
★ 4.6
★ 1.5
★ 6.1
★ 0.0
Eiji, a teenager eager to follow in his late father's scientific footsteps perfects one of his old experiments to diminish the barrier between pain and pleasure.
