This manga isn't very well known, so if you stumble upon this then I'm glad to know other people are either interested in it or are currently reading it.
(This is Shoujo Ai, meaning it contains light lesbian-related contents, so read at your own risk if you don't like those kind of things)
Hero-San (as I'll be shortening it for the sake of saving time) is cute, adorable and, most importantly, enjoyable. The two main characters, Honey Trap and Rabid Rabbit (known as Hayate) are looking to team up for justice and to take out the evil organization known as Antinoid. They create sort-of mech-like beings and various devices. It seems Antinoid consists of 4 main people who seek to do evil things, though at times you begin to question whether they're truly bad or not.
Honey Trap was formerly apart of this organization, but due to a misunderstanding, was fired. After previously encountering Rabid Rabbit in a mission prior to her leave, she actually falls in love with her, though it is only one-sided thus far. Honey Trap tells Hayate (Rabid Rabbit) that she is no longer apart of Antinoid and believes that Hayate would hate her. But, Hayate says that no matter what, she wants to help people whether they are friend or foe. Thus, Honey's love for Hayate grows deeper and their friendship begins.
There is a plot, but most of the chapters are usually just slice-of-lifey. We experience how Honey and Hayate experience their days together and apart and how they grow closer to one another in such a short amount of time. There are also some moments of great backstory from Hayate, telling us how she originally became a Hero and the struggles she faced.
My interest lies in nearly every aspect of this manga. The art style is really pleasant and looks phenomenal, the characters aren't boring and are a joy to see in action, the settings and backgrounds always look top-notch, and the premise is interesting. I love to see Honey and Hayate interact, biding my time until they one day might get together, or until Honey truly professes her love. I'm a sucker for romance, and this gets my heart racing at times. (Edit: I forgot to mention, there are some action elements. I mean, Hero is in the name. The action is great too. But, to be honest, it can feel a little hard to keep up with it from panel to panel at times. So be ready for some action, romance, and comdey.)
I mentioned it being a Shoujo Ai, so expect to see A LOT of female characters. That's about it.
There aren't many chapters out there yet (translated, there are only 12 chapters from what I have read), but it's still fun and gets me excited of what's to come. I do hope for more, it makes me happy.