In an arrangement to expel all doubts from himself, Light discloses to L that he figures he might be Kira intuitively and requests to be restricted. Light's dad trusts it is likewise a smart thought to be restricted to a cell just as he can't chance his feelings showing signs of improvement of him. In imprisonment, Light gives Ryuk the request to have his memory cleaned, leaving L befuddled now that his two speculates both register as genuinely guiltless.