I'm Fighting Zombies in My Daughter's Country

[The bait is very salty, bring your own water] The protagonist mistakenly enters the land of girls. Because the yin energy is too strong, the dead people in this world begin to transform into corpses. Only plants can kill zombies. However, planting plants requires bathing in Yang energy. Although the protagonist's Yang energy is very strong, it will always run out. Therefore, he needs to go to the original world to absorb the Yang energy of other men and bring it back to plant plants, repel zombies, and defend the daughter country.