Feelings Within

 Feelings Within (内感情, Uchi kanjō) is the sixth chapter of volume seven and fifty-eighth chapter overall.

Plot
All of the investigation data is erased, which means one thing: Watari is dead.

The team notices that Rem is missing, and L quickly realizes that the Shinigami must have killed Watari. As he’s about to tell the team of his discovery, L collapses.

Light holds the dying L in his arms and looks down on him, smiling fiendishly.

L finally realizes that he was right all along. Light is Kira. He has always been Kira, and he will continue to be Kira.

Then, L closes his eyes and dies.

Rem is wasting away in the other room. Her whole body is turning into dust. Panicked, the investigation team takes L to the hospital where he is pronounced dead. Pretending to be angry, Light goes to search for the Shinigami that killed L.

In reality, Light knows that he quickly has to find the remains of Rem and retrieve the Death Note she left behind. He does so and shows the team the remains of a Shinigami. Then, Light swears that he will avenge L’s death. However, for now, Light has won. He has gotten rid of Watari. Most importantly, he has outsmarted L, and now he is out of the way.

Now, there is no one stopping Light from being god of a new world.

Conception
Ohba said the chapter's title "Feelings Within" generally refers to L's last internal monologue. People often asked him what L was trying to say but Ohba make it clear that Death Note is about readers discovering their own conclusions about the work, so he refused to answer the questions. Ohba believed that not knowing every aspect of some things makes them feel more exciting.

Ohba also said that the title also refers to Light's emotions the time of L's monologue.