After Shiro woke up he felt dizzy and couldn't remember anything that happened after he started reading the book which is now gone.
Shiro: "That's strange it was right in front of me? Something strange is going on."
He then checked the time and it was already 4AM which meat 5 hours had passed since he started reading the book and lost conscience. It didn't take long after that and someone threw a letter at his window. Shiro checked out, but no one was there.
Shiro: "Things just keep getting weirder and weirder today." – said Shiro while picking up the letter.
He was shocked to see what was inside. It was a photo of Yui strapped to a chair with her eyes closed and the location of where she was. The letter said "Come here by morning if you want to see her alive again." Without hesitation Shiro went out, but all the way he couldn't stop thinking why someone might do this.
Shiro: "I need to make it there as soon as possible, but the question still remains why do they want me there instead of giving me a price or anything in exchange for her? Something smells fishy here, but I should worry about that once I'm there."
Once Shiro arrived at the destination a strange masked person appeared in front of him.
Shiro: "Who are you and where's Yui?"
"Silence"
Shiro: "ANSWER ME DAMN IT!"
Masked Person: "If you want to know that badly then follow me."
Shiro followed the masked person to a nearby port in what looked like an abandoned warehouse. Yui was right in front of them unconscious and still strapped to the chair.
Shiro: "YUI! WAKE UP!"
Masked Person: "She can't hear you right now. If you really want her back you have to fight me first." – said the masked person while removing his disguise.
Shiro: "WHY THE F*CK ARE YOU DOING THIS! CHIYO TANAKA!"
Chiyo: "Simple I need your friend out of this world. His existence here might be for the worst."
Shiro: "I don't know what you're talking about, but if it's a fight you want than that's what you'll get." – said Shiro while charging head on at Chiyo.
He proceeded to throw may punches, but Chiyo managed to dodge all of them.
Chiyo: "Is this all you've got. Got to say, I'm disappointed." – said Chiyo while he started fighting back.
Shiro: "Oh, right. Than taste this!"
In that moment Shiro managed to dodge all of Chiyos hits and landed a clean hit at his jaw throwing him down.
Shiro: "You might think your tuff sh*t because you're a great athlete, but you should remember that when it comes to fighting, you're in my f*king ground."
Chiyo: "I have to admit that was quite the punch there, but you still aren't using his help I see." – said Chiyo as he stood up.
Shiro: "Hey man, I'm sorry did I hit you too hard? Because I don't have a clue what you're talking about."
At that moment the Unknown Voice started talking to Chiyo again.
Unknown Voice: "You shure you want to do this Chiyo? You might end up killing him."
Chiyo: "That's something I need to do if I want to draw him all out."
Unknown Voice: "Ok then, go wild I will help you."
At that moment a dark aura started coming out of Chiyos body.
Chiyo: "Wake up, Yamitsuki and grant me strength to defeat my foes!"
The aura became more powerful and covered everything around.
Shiro: "What is this? I can't see a thing!"
The aura then started taking the shape of an armor and a spear which Chiyo equipped on himself.
Chiyo: "I did my part so bring him out to or you will die by my hand."
Shiro couldn't stop cowering in fear. His mind kept telling him to fight and protect Yui, but his body had given up hope and just wanted to run away.
Chiyo: "Disappointing I thought you had more power within you, but it seems I was wrong." – said Chiyo as he charged with an unimaginable speed towards Shiro ready to end him.
Shiro Thinking: "Please forgive me for not being able to protect you."
In those last moments a shadow just came out of the ground and stopped Chiyos attack throwing him away.
Unknown Voice inside Shiro: "Damn it you are pathetic. Well I guess I can't go back now so I guess I should intervene." – said a strange shadow which appear in Shiros mind.
Shiro: "Who are you?"
Shadow: "I'm the one person who can save you and her right now you just need to accept and trust me."
Shiro: "How do I know I can trust you?"
Shadow: "Well it's up to you if you do trust me or not, but if you die so do I and after that display that guy isn't going to let you live now."
Shiro: "Ok, though briefly I trust you, please lend me help."
Shadow: "Smirks" "Well than just chant this ----- and say my name ----- out loud and I will lend you my powers."
Chiyo gets up shocked that he managed to block his spear so easily.
Chiyo: "So this guy had it after all. He's a demon host like me!"
He couldn't believe his eyes seeing the great amount of power coming out of Shiros body.
Chiyo: "Who the f*ck are you, and how can you act as a host for something of this magnitude?!"
As an incredible amount of power was surging through him Shiro just stood up and followed the shadows instructions.
Shiro: "Wake up and cover this world in shadows darker than the night itself, KAGEBOSHI!"
Right there here felt true power be unleashed and the only thought he had was to defeat Chiyo and rescue Yui.
Kageboshi: "Finally! It's time for the real fight to begin."