Sad story

This is a famous Korean horror webcomic strip (often called “the scariest comic on the internet” or “the Bongcheon-Dong Ghost comic sequel”) by Horang (호랑). It’s a classic example of a “jump-scare comic” that builds slow dread and then hits you with body horror and twists. Here’s what actually happens panel-by-panel and what the twist is:
The apparent story (what it looks like at first)

A little boy is in a terrible accident.
His mother heroically saves him from a burning taxi, but she is horribly burned in the process (newspaper headline: “Mother saves child, mother’s life in danger”).
The boy survives with minor injuries (bandaged head), but his mother is left with horrific full-body burns and disfigurement.
Years pass. The disfigured mother still lovingly cares for her son (brings him food, birthday presents, tucks him in, etc.), but the boy is visibly terrified of her appearance every single time.
Eventually the mother, heartbroken that her own child is still scared of how she looks, commits suicide (the bathroom scene with the body on the floor).

The final twist (the real story)
Last few panels:

The boy, now older, lives alone in the house.
One night he has to go to the toilet. He opens the bathroom door… and sees the exact same burned corpse from years ago still lying there.
He screams in terror.

Meaning:
The “monstrous burned woman” who had been raising him for years — bringing him meals, gifts, tucking him in — was never his mother.
His real mother died the night of the accident (or shortly after).
The burned creature has been impersonating her and living with him ever since, perfectly mimicking a mother’s behavior… but he always sensed something was wrong and was terrified of “her.”
The final bathroom scene reveals the truth: the real mother’s corpse has been rotting in there the whole time, meaning the thing that’s been caring for him is something else wearing his mother’s burned skin (or simply pretending to be her).
That’s why the comic ends with the boy finally realizing he’s been living with a monster for years. The horror isn’t that the mother killed herself — it’s that she’s been dead the entire time and something else has been raising (and possibly grooming or feeding on) the child while perfectly acting like a loving mother.
It’s an extremely effective “the call is coming from inside the house”–style twist that relies on you feeling sorry for the “mother” right until the rug is pulled out from under you.