Konna Jinsei Wa Zettai Iyada summary:

Saki comes from a poor family and leads a boring life filled with constant studying. She worries about her relationship with her parents not ending well and any lingering backlash caused by their fights. One day, she happens upon a group of troublemakers who pressures her into smoking a cigarette. Somehow, her relationship with them turns out to be more pleasant than expected. The time she spends with them makes her alive and revitalized. However, this is only the beginning of her unfortunate life. A tragic suspense story about a young girl falling from grace.