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Tear Jerker: Kenichi The Mightiest Disciple
In the chapter 192, when the suppressed memory of her mother's death suddenly breaks into Miu's consciousness ( She got killed by her own husband while trying to protect little Miu).
Chapter 264 - The tragical self-sacrificial death of Sho Kano, together with the scene where he makes Kenichi promise him to protect Miu. Although, it's still questionable if he's really dead, since his body was immediately taken away. But considering his mentor's reaction and not finding him for quite some time....
"Kenichi... you can have the manju... in the fridge." ;_; To elaborate on this, Apachai just self-revived from a FATAL attack and this was considered his last words. Best Big Damn Heroes ever Akisame.