Alien invaders called Kiseichuu are plotting to gradually eradicate humanity by draining them of their H-energy, or libido, and undermining human reproduction. While this issue looms over society, Retto Enjo discovers that his childhood friend, Kirara Hoshino, has closed herself off from the world after a traumatic experience, and is worried about her. He speaks to her for the first time in many years, but their rocky relationship is unchanged. Retto is discouraged by this but encounters a Kiseichuu on the way home from school. He explodes with rage when he witnesses people being drained of their H-energy and losing their vitality, which causes him to…
But if I can get back
to the way things were, then...
Aber falls alles wieder
so wie früher wird …
Pero si pudiera volver a como
eran las cosas, entonces…
Mais si jamais je pouvais
redevenir comme avant…
Mas se pudesse voltar
a ser como antes...
Но если… вдруг… получится снова
стать такой, как раньше…