Please! I'm Not a Girl!

Because he was stuffed in the stomach by his sister when he was born, and almost died of hypoxia, the protagonist has been frail and sick since he was a child. At the age of 15, he is only 150cm tall! But a pair of big black and clear eyes, a delicate little nose, twinkling eyes with a faint luster, and slightly red cheeks. He is so delicate and pitiful that people just want to do something to him after looking at him.