The Always-Invisible Master of the Sword Crossover

Hei Zi Yingzhi, who lives next door to the Mori Detective Agency, has seen quite a lot of the world.

In the past, he fought the Time Retrograde Army and attended a certain technical college. He punched his way through 800 million time-traveling soldiers and trampled eighteen kinds of cursed spirits underfoot.

But no matter how glorious his past was, it couldn't hide how down on his luck he was now.

With a constitution that made people overlook him, he was cruelly forgotten.

#Why does the awful government agency keep withholding the grudge bearers' pay?

#Why hasn't the technical college paid its staff for a whole year?

With a whole citadel of sword spirits clamoring for food, Hei Zi Yingzhi had to return to his old line of work to make ends meet: how about hiring a private detective who gets the job done for money?

But wasn't the deal that we'd all slack off together, and whoever made it ashore first would be a dog? So how come that guy next door has gone and fallen asleep?

Still stuck on shore, Hei Zi Yingzhi can only spend his days catching cheaters and exposing cuckolds.

At least there are plenty of messy love affairs in the world, and the rich dads who hire him are all very generous!

--

For example, a wealthy red-haired man in a black hat hires him to follow a bandage enthusiast.

Then there's a muscular black-haired man who hires him to follow a white-haired weirdo with a blindfold.

And then several Rikkai High School students hire him to follow their student council president.

Counting his steady stream of pocket money, Hei Zi Yingzhi stands on the roof of his citadel and sincerely thanks the world for its complicated, passionate relationships between men.

Another day of being moved by pure friendship~

CP: Undecided

Silly comedy style. There will always be OOC, either on the way to being OOC or already being OOC.

Written at an elementary-school level, please don't roast me.

A crossover with a few colorful miracle-generation characters, murder tennis, a certain Natsume's friends, and Japanese soul reapers.

Serious synopsis:

None

Theme: Another day of building a harmonious Yokohama!