I found that scene with Naomi walking to her noose chilling, especially when she found out that Light was Kira a moment before. As for Light's father- he died not knowing the truth, and he died with his son trying to use him. I thought that was very tragic. His son was もっと見る concerned with killing someone than his father dying.
Naoimi- Wow i felt so bad Light made her kill herself.
Soichiro Yagami: Light's father's death was so sad. He died not knowing the truth. His own son didn't even care... Takada- No one really mentions her. She was intelligent, kind, and Independent. She died alone, naked and was forced to set herself on fire. Misa: I'm pretty sure Misa killed herself によって jumping off of a bridge at the end of the series. It's pathetic but it also showed how much she cared about Light