Hataraku Saibou (Cells at work) is by far the most charming show this year. The characters, the world, the humor, it is all so charming. I am thankful for this OVA because it reminded me of that fact. Oh yeah, the OVA is great too. The story is just cute. A normal Cell is bored and comes across an mysterious cell and together they do a ton of pranks. The interactions it brings with it are not only charming but also freaking hilarious, even if it sometimes seems a bit too mean (I won't forgive you for hurting my RBC. I won't).The animation is still the same (good animation but kinda rough artstyle) and that goes for the music and characters too.

Yeah.. this OVA is exactly what I expected of this anime. If you watched Cells at Work then I see no reason to not watch it.