as this Ye Han and Chiba watch as the two ninja wannabe stops and put on the dramatic entrance. Korosensei and the students were shock as the small strawberry cake was smashed into pieces, The white ninja with his face uncover spoke with a smirk
"Happy Birthday, it looks like time is ripe. Let me give you the gift of the world's cruelest death." -Yanagisawa
"Yanagisawa....." -Korosensei
The 2nd ninja who slowly walks as he unveil his face by unzipping the hoodie zipper, he spoke in a creepy tone.
"Sensei, do you still know who I am?" -Korosensei's first apprentice
"Let me reintroduce him to your student. He's the man who stole the name "The Reaper" from your octopus like teacher and as of today, he's the new koro sensei." -Yanagisawa
The Reaper with his jacket released became a creepy tentacle monster that looks very scary and intimidating, Ye Han motioned Chiba to get ready as he gave him the sniper coordinates where to hit. Chiba was clueless on why Ye Han commanded him to aim on a empty spot close to Kayano, The Reaper began to attack using his tentacles as Korosensei disappear from his location while the students flew a few meters backward because of the air pressure that was produce from the tentacle attack.
The fight began to look like goku in his super saiyan form fighting a frieza's final form on the sky, each tentacle attack made Korosensei do a defense boxing position to limit the stamina consumption. For the students it looks like the fight was hard to interupt but for Ye Han's vision it looks like a super slow motion kid's fight. It was like a kid slapping each other on the arm. Korosensei was blocking all the tentacles to protect his students, Yanagisawa knew this which made him command The reaper to unleash the berserker mode.
The Reaper's tentacles and body turned bright red as dark red electric started to show up, he was like Night Guy unlocking the Eight Gate which made Korosensei's mood nervous as Yanagisawa smiled and said
"All right 2.0, start!"
The Reaper aimed his tentacle hand and used a red hyper beam which made Korosensei move and block the attack using his whole body. The crazy Yanagisawa spoke "next, next, next." as The Reaper disappeared from his position and entered the backside of the student while aiming his hyper beam to which made Korosensei block. The students were powerless in the tentacle monster but Ye Han already felt it was time, he spoke to Chiba
"Shoot!"
Chiba and Ye Han shot a BB to which direction was onto the empty beside Kaede who was planning to use her skill which she learned from the class and Yanagisawa's tentacle like arm. The Reaper smirk as he had already shot his tentacle towards Kaede's chest, everyone was shock as they couldn't even rush to save their friend. But suddenly the tentacle that was suppose to hit kaede drop to the ground as Yanagisawa felt one of his hand missing. Korosensei look behind him as he uses his eyes that was bulging out of his head, he saw Ye Han waiving at him while Chiba breathing heavily as this was the first time he succeeded in hitting a tentacle.
The two tentacle creature wannabe screamed in pain as this was the first time they were injured even being powerful enough to destroy a city. Ye Han commanded Chiba to shoot in a certain location while Korosensei took this chance to counter attack and slice off a few tentacles of his ex apprentice, Korosensei was having his flash back about why did his aprentice betray himself. But then after a few seconds of flash back, his inner feeling felt bitter as it was his own fault and teaching which made the little reaper rebel. For now even though he wanted to stop and talk, he couldn't since The Reaper began to berserk literally and swipe all his remaining tentacles toward his students.
Yanagisawa was about to move, but he was again hit by another BB and lost his last arm. Chiba's BB shot broke one of the tentacle that was gonna hit Nagisa, every second Ye Han would order another location which made Chiba very stiff as he grips his sniper rifle and continue on shooting. They were 2 kilometers away from the location and was at the highest peak of the mountain which made the BB move faster, Yanagisawa became more desperate as he couldn't see where the shooter was since the snipers Ye Han modified have been enchanted with magic.
The remaining crescent moon behind Ye Han and Chiba became the light that hides their shadow as they shoot out their BB bullets. Kaeda nearly fainted when she saw all her memories pass through her mind it was almost the same to Nagisa who never felt death so close, but then they remembered that they still had a special cooking subtitute teacher and their classmate chiba covering them. It was this moment, where they began to raise their guns and BB grenades and shoot the two enemies that are trying to attack them and Korosensei.