Naked Fist

Akira (Mako Komaki) was helped by Tetsuko (Moe Amatsuka),a user of "Hadakaken", who was attacked by the vigilantism. She tries to learn "Hadaka Fist" to help her captive boyfriend, but it is a fist method that causes the other party to die by sexual intercourse. Using "Hadakaken" means losing her virginity. Should I protect my boyfriend (loved one) or virgin (virgin)? What is the too sad conclusion of the maiden who is shaken by the conflict?