Gamble

 Gamble is the 7th chapter of Volume four and 32nd chapter overall.

Plot
Light instructs Rem not to kill L until he tells her to do it. Misa gives Light one of her phones so that he can easily contact her during emergencies. After Misa leaves, Light decides to kill L the next day before he decides to go into hiding or cut off Light’s access to him.

L is examining DNA evidence from the second Kira’s packages. He curtly tells Soichiro that if he dies in the next few days, then his son is Kira. L deduces that if Kira and the second Kira have indeed joined force, and Light is Kira, then he is in trouble. One of the task force detectives, Mogi, has been shadowing Light for the last couple of days, and he noticed that Misa visited Light. He told L.

Light is walking around the University campus with his current “girlfriend”, Kiyomi Takada, when he finds L sitting on a bench. L tells Light that he told investigators that they should assume that Light is Kira if L is killed over the next couple of days. Light begins to back out of his plan to kill L that day.

Suddenly, Misa appears behind Light and tells him that she couldn’t wait to see him. Light is horrified at Misa’s stupidity. However, when L introduces himself to Misa, he realizes that this is the most amazing thing that could ever happen. Misa has now seen L’s real name! She can tell him his name and he can kill him now.

However, Light notices that L smiled when he saw him and Misa interacting. He wonders if L has figured out that Misa is the second Kira. However, L just tells her that he is a big fan of Misa. Soon, Misa is surrounded by a crowd of people who are curious to see a real-life celebrity. Suddenly, L touches Misa’s rear. When confronted by Misa, he vows to catch the rude culprit.

Misa is, then, escorted away by her agent who tells her that she needs to go back to the studio right away. L also turns around to leave. Light quickly gets out the phone Misa gave him and starts to call Misa so that she could tell him his name.

Conception
The title "Gamble" refers to Light's decision to kill Ryuuga even though Light is not entirely sure that the man who has confronted him is in fact the real L. It also refers to L's decision to appear in front of Light at the university.