Reposting MAL discussions about Komori-san, to help OP out:
A really relaxing and funny short anime we got here! So the review will be as short as well.
The story, well, there's not any real story. It's just Komori, the female mc, helping people out no matter what it is, thus, "Komori-san Can't Decline!". She's really kind and doesn't reject anyone's request. I think the whole point of this anime is you should try your best to help others, even if you may not be the best at whatever they requested.
The art was pretty good. The op and ed song were suitable to the anime.
There are also 2 more characters along with Komori – Masako and Megumi. Komori hangs out with them often.
Well, I wish it was at least 10 minutes, sadly, it's only 2 minutes per episode. So given that, I enjoyed the anime. 7/10