This was a fun, short read.
I liked the concept of the female lead using men to power up. I actually feel a lot more could've been done with that idea and am disappointed that it wasn't used to its full potential. For example, in one chapter, it's revealed the man she uses determines the kind of power up and uniform she gets. She fuses with a guy who just read naughty magazines and ends up with a fanservicey uniform. I thought it would've been really cool if she ended up powering up with an armor nerd later on and getting cool armor as a uniform.
I actually really like the female lead, Hinata. She acts so normal and I like how she can fight just fine.
The only time she's a damsel in distress is during the final battle, but the men couldn't defeat him either. Not one on one, anyway.
The male lead, Luna, is really annoying with his stupidity and how he keeps running right into the bad guy's hands, but it is interesting to see a role reversal of a dumb damsel in distress.
I do feel this could've been longer. It ended on a good note, but it doesn't feel like a complete story. There're too many unanswered questions.
I recommend this if you're looking for a short, entertaining, mindless action manga. Otherwise, you won't find much of interest here.