MC transmigrated into a bl novel where his bro was the protag and had multitude of psycho partners. MC then had bro become a scholar and her a knight.
In mcs world, she also had a little bro, but poverty and stress made her impatient to her bro who was actually desperately asking her to save him. Not long after, he left her a suicide note and left. She confronted the bullies but her low financial stature, she was taken seriously
Let’s Hide My Younger Brother First