As an OVA, it's part of the Kure-nai franchise which includes the original light novels, a manga, and a 12-episode TV series. These 2 episodes cover some day-to-day life of the high-schooler Kurenai Shinkurou. He's a dispute negotiator who is trained to use strong-arm tactics when necessary. And he's surrounded by women (of all ages) who make his life interesting. Ideally, this is for people already familiar with the Kure-nai story. But if you're not familiar with it, you could try it out to see if you want to try the series, since it's pretty typical of content in thelonger series. (Though it has more harem, and less action/thriller.)

Here, Shinkurou runs into terrorists, has his usual after-school chore of looking for side jobs, and has to deal with the girls who want his attention: whether the lady-like little Murasaki that he's caring for, or her katana-wielding bodyguard, his profligate neighbors, or girls from school.

Supposedly these 2 episodes follow the original novel more closely than the series did, but they're so short that probably nobody would notice. More noticeable is the art style. It's much sharper than the slightly rounded style in the series.

Overall, it's a short supplement to the series that you should enjoy if you liked the series. And it's short enough that if you don't enjoy it, it won't waste much of your time.