My Girlfriend is Everyone’s Toilet Bitch

Yuka Ootsuki is my childhood friend who I’ve been dating since junior high school.
She is always cheerful, has a sense of justice, and is popular with both men and women.
The couple gets along well and one day they finally spend a night together.
Then, a certain test was conducted at the school.
It is a test to find out people that have a strong immune system.
The result was positive for the girlfriend. The protagonist was gut-punched, but his girlfriend looked somewhat mystified.

Sadly, her parents’ factory went bankrupt.
In other words, her parents’ family was heavily in debt and she had to find a job.
She ended up accepting a job that would provide immediate income, with the condition of lending her body to others to protect them from the virus.
(Spoilers: She turned into a cum dumpster…)​