I Think I Have Mental Illness

[Two male protagonists + supernatural powers + one body + unlimited flow] At the age of 24, Mu Nanxu was diagnosed with ALS. It was also the year that he diagnosed himself as "mentally ill", and it was also the year that his worldview collapsed. There is an extra person in his body - Mu Xunan. Yes, after his name! This shameless man! After that, the world in his eyes changed. Monsters were everywhere, but others couldn't see it! So he must have been misdiagnosed and suffered from mental illness! "Why are you taking off my pants!" "Children, have your consciences been eaten by dogs?" "You look so cute, why do you have thousands of teeth!" "Mu Xunan, help me!" … His life has changed and there are surprises everywhere!