Rio de Janeiro, late at night.

February is a cold winter in the Northern Hemisphere, and indeed the hottest summer in the Southern Hemisphere, and hot summers are always suitable for some fiery festivals, such as the carnival in Brazil. The days on which the carnival takes place are always the busiest days in Rio de Janeiro. During these days, most of the girls in Brazil dress up for the day and proudly show off their sun-kissed skin, which is a symbol of health, and join in the revelry. The girls of the samba school show off the results of the year on floats, and local samba enthusiasts dance on the side of the road to form a gorgeous dance party. It was also their most shining day, and today they are like diamonds in the crown, dazzling.

"Now, Kotono-chan, you haven't finished that story last time." The girl nudged the shoulder of her companion next to her.

Not all girls in the huge Rio de Janeiro can dance samba, and there are many girls who don't. Most of them were coolly dressed tourists, some were reporters sent by television stations around the world, and a handful of people with different agendas, such as two girls with very different styles who were lying on the top floor of one of Rio de Janeiro's few office buildings.

One of them, dressed in a slim black suit, was leaning on a long trench coat and was in control of a sniper rifle, or shoulder-shot, erected on the edge of the rooftop. The caliber of this gun is more than double that of traditional large-caliber sniper rifles, reaching a terrifying 25mm, and the world-famous 12.7 caliber M82A1 looks like a full-scale model in front of it.

XM109 sniper rifle. It is produced by the same Barrett company as the M82A1, so the shape is somewhat similar to the M82A1. With a total length of 1168mm, a weight of 20.9 kg, a semi-automatic structure, a magazine capacity of 5 rounds, and a high-explosive dual-purpose ammunition originally designed for helicopter cannons, the gun is both the most powerful sniper rifle and the most accurate grenade launcher. However, the large ammunition volume makes this gun more affected by the wind when firing at long distances, and even after Barrett developed the BORS specifically for it, the effect is not much improved, but the radius of the grenade is much larger than that of the rifle bullet, which can barely come in handy. However, this kind of battlefield weapon is obviously inappropriate to be used in the current kind of law and order warfare. Ordinary dual-purpose munitions obviously injure a large number of civilians, and it is difficult to hit targets with conventional munitions that are specially built unless they ....... Used by geniuses among the elite shooters.

Originally, the guy who mastered this kind of life-and-death 20-kilogram killing weapon should be a strong man like Schwarzenegger, with a square face with a cigar in his mouth, and the majesty of the majesty was shocked, but in fact, the person who mastered this gun was a delicate girl, and her height was only one and a half guns, and she was not a strong man at all, and she was dealing with the girl next to her unbearably, and obviously it could not be described as majestic and impressive.

"Oops, hey, I'm on a mission right now, so just let me go......" Kotono remembered how many times she had set aside Eri's groping hand and reattached it to the cheek pad, scanning the serpentine parade with her scope.

Originally, wearing a black suit in a lively carnival was unusual enough, but another girl's clothes were even weirder. Her outfit is red and white, the white is white, the red is a scarlet hakama, and it is a set of Japanese shrine maiden costumes on the other side of the world. Her long, burgundy hair hung lazily on her back with a white ribbon tied in a low ponytail, and a long knife with a white sheath stuck in her red belt. Up to this point, the style of the shrine maiden has been fairly uniform, but the big binoculars around her neck and the MP5-K on her back are quite nondescript.

At this time, the girl was tirelessly harassing the beauties in suits around her, her expression was like a mangosteen rat that had seen food, full of curiosity.

"But I'm really curious, so let's continue~ Don't worry, I've pinched the microphone, and no one else can hear it." Once again, the girl extended her claws to her companions, and the persuasion did not stop. "You see that this dancing king hasn't appeared until now, and we're not bad for a few minutes after you finish talking in a few minutes, right?"

"Don't! Don't do that! Okay, okay, I said, you let go first......." The girl was finally tossed and collapsed by her companions, raised the white flag and surrendered.

"Where was the last time I spoke?" Kotono asked, the sniper rifle was still pointed at the parade, and thanks to the 2000M weapon, her firepower was able to cover 70% of the entire length of the parade.

"Almost nothing was said. You just said that you thought Li Su was a little strange, and we were called over to carry out the mission. Eri, who had succeeded, stopped tossing Kotono and raised her binoculars to look at the procession, and began to be a competent observer.

"Oh, that time, didn't he take the train back to the academy on Chinese New Year's Eve? I went to pick him up at the train station. Didn't you say hello to me then? You're wearing a black princess dress. Kotono suddenly thought of something: "By the way, why did you wear the shrine maiden costume again?" It seems to have been this for the past few days, right? It's so inconvenient to move, I remember you have a lot of other clothes. ”

"Because...... This one. As if revealing some secret, Eri lifted the big cuffs of the shrine maiden's suit, and through the faint light, Kotono saw the secret in the sleeves—the dense pockets. Each small pocket contained different things, including small packets of snacks, PSP, and mobile phones, and she couldn't see anything else.

"Those beautiful clothes are fine for two days, but if you wear them for a long time, it's still this witch costume, lalala~~" said Erika as she took out a small bag of potato chips and tore open the seal.

"If I'm not mistaken....... We're on a mission, right? Kotono only felt a few black lines hanging from her forehead.

"yes, but eating and being an observer don't conflict, can't my PSP be carried well? Okay, leave it alone, I'll keep talking! Eri handed a potato chip to Kotono's mouth, but she refused.

"Hmm...... All right. ”