What the actual fuck is going on in the killing game route?

Nozomi got hurt so we gave her alien blood but the blood made her sick so to fix her we have to give her more alien blood but this time it's done vampire-style for some reason so Eva and Nozomi's VAs have to make moaning/sucking noises into the microphone and drinking the blood somehow let them mutually read each other's minds and this psychic bond has forged a surrogate matrofilial relationship between them so strong they are now willing to die for each other even though I'm pretty sure they've never even talked before?

?????