Valkyrie Choukyou Semen Tank no Ikusa Otome 10-nin Shimai According to "Valkyrie Ch%u014Dky%u014D Semen Tank no Ikusa Otome 10-nin Shimai" (erotic game) by MBS Truth. The Valkyrie are arrested for maintaining peace relating to the realm of gods, the world of humans along with the whole world of the dead. The peace has begun to breakdown and one of many Valkyrie has become possessed by a vengeful force.