I May Be a Sickly Mom, but I’ll Raise My Fallen Son!

Read manga I May Be a Sickly Mom, but I’ll Raise My Fallen Son! / 病弱ママですが、闇落ち息子を育ててみせます！
After dying, she wakes up inside the world of a romance fantasy novel she once read—and not just anywhere, but as the villainous stepmother destined to be killed by her darkened son. Refusing to accept such a fate, she vows to stop his descent into darkness and destroy every death flag in her path. But there is one major problem: her new body is incredibly frail, collapsing after the slightest effort and threatening to give out before the story can even reach its tragic end. To survive, she must improve her health, shower her son with love, and change the future before it is too late.