Plus-Sized Elf: Second Helping! manga volume 1 features story and art by Synecdoche.

Naoe-kun, a massage therapist, is about to head home for the day when he's saddled with a rather strange patient. This lovely lady has emerald eyes, pointy ears, and grew up in the forest--everything about her screams "elf," except for one thing: her bodacious body. It turns out she left her world but loves junk food in this one, and now her obsession has caught up with her. Can Naoe-kun help this lovable elf girl lose the weight–and keep it off? The hit series Plus-Sized Elf continues in its sequel series, Plus-Sized Elf: Super Sized!