Here are the ones that I have seen.
Devilish Joy : ML has an accident leading to him losing the ability to make longterm memories
Babo: Miracle of a giving fool :ML has developmental issues due to an accident
Cheese in the Trap : ML is a sociopath
Come and Hug Me : ML and FL have PTSD due to shared childhood trauma
Gloomy Salad Days : series about dealing with mental and social issues
Good Doctor : ML is a genius doctor with autism
Herb: FL has intellectual developmental issues
Flower Boy Next Door : FL is a recluse due to trauma
Introverted Boss : ML is a recluse due to trauma
It's Okay That's Love : All leads deal with some sort of mental trauma
Kill Me,Heal Me : due to childhood trauma, ML developed multiple personalities
Marathon : ML is autistic
My Mister: FL has depression and secondary character has PTSD