Fleshing out story on character

So i have decided to do a number of certainties with my character, to do with his play style but more importantly I have been thinking about what my character had been through, name, est.

So with the name i was kind of unoriginal i am going with the name of Senshi, which is Solider in Kanji. I then started to think about his history, family. I have come up with this layout

Senshi was walking along the road through the paddy fields, the stars were bright the moon reflecting into the water of the paddy fields. When he sees a luminous light in the distance. A lantern came bobbing along the path and a shrill voice echoed "a young warrior; good; good," a hunched woman carrying a lantern came into view. " do you seek riches, i can tell you a place, not far from here, much money, enough to fill your belly for years to come". Senshi felt his stomach twist at the sound of food, "If you follow this path you will find a mountain at the top and old temple resides" Senshi saw the woman's hand rise from the folds of her rags, and a pale bony finger pointed towards the mountains in the east. "The temple is guarded by three spirits, each terrifying, each strong. You will have to fight them out using this" the hags hand shook the small stick and the lantern towards Senshi who took it abruptly and tried to view the woman's face, yet her cowl was pulled close. "If you defeat them the rewards will be yours." Senshi paused; he was no fool. "And what do you wish for in return" A harsh cackle that quickly stopped as rain began to fall. "Smart and strong, good, i wish only that you bring me an intense holder the third spirit hangs it by its neck, bring me this and this alone and i will be satisfied." 

"And if i do not" Senshi replayed  "you will rule the day" The hag looked up Senshi saw a deep red face with large yellow eyes, two horns patroding out of her head, jaw long and wide. Teeth jagged and as sharp as his katana Senshi backed away their was a flash of lightning followed by a crash of thunder and the Oni had vanished.

Senshi grabbed the lantern and strolled through the fields, his hand firmly on his sword. Though he was sure he was alone again. After a mile of walking Senshi found a tea house, he walked in. The nobles were sat around, laughing and sharing sake, silence struck as Senshi walked in, he was a samurai yet he was unkempt and unruly, he pulled his hat low down his face and ordered some sake, he felt a man eyes on him from behind, he knelt down and drank the taste was warm harsh and refreshing, that will be 4 silver, Senshi felt in his pouch and felt the cold feel of coppers around his fingers, he pulled them out. 12 coppers not even half of the amout for the sake. "Trash" shouted the shopkeeper as he saw the money, Senshi sighed bowed and turned to leave only, to find his way blocked by one of the nobles. "You filthy Ronin" He spat at Senshi's feet " How about i pay for your drink and you can entertain me" Senshi noticed the mans hand ready to draw his weapon  He smiled, like a flash his right hand found his katana while his left gripped his wakashi. The noble never knew what happened, both blades had done their job and were sheathed again by the time blood started to fall. Senshi shook his head and slide the door open as the man dropped dead behind him. He was sick of this, being treated like a dog. His eyes burned as he looked up towards the temple that the Oni had told him about "The rewards would be all yous" the words revolved around his head. And he stepped forward. 

It took him two days to reach the peak of the mountain, he had a small run in with some of the previous's nobles friends two were weak and droped like children the third however had grace, speed and power. enough to wound Senshi a rare incident indeed. Yet not strong enough to kill the ronin. Senshi let him live, the man's name was Ansuga, and he lived in a town east of here. Senshi climbed the steps, towards the tall building Senshi got was exhausted but in aw at the scale and architecture two large beams held open an archway that lead to a set of huge double oak doors. Senshi approached as he did he noticed the door had a large scroll thrown over the door. The words "Death waits" printed on the door. Senshi ripped off the note, and yanked the door back, a cold wind blew into him, he grabbed for his hat and held it firm, suddenly the wind stopped and only darkness remained.  Senshi stepped into the room as he did the door shut behind him a gust of wind hitting his back, suddenly the room was a lit, candles littered the walls, going all the way to the celling, in the centre of the room was a pile of people 10 foot tall, all thin, pasty. Their mouths were open, the sound of groaning echoed around the wooden hall. Senshi approached as he did the body’s screamed, they twisted and squished, first a head then a body, then legs came. Until a body made of pale, weak corpses was standing over him. 12 ft tall, thin hollow spirit loomed over Senshi, it had a faint blue glow that wrapped its around its body like a cloak, suddenly a small bell like ringing could be heard, suddenly it strike, Senshi rolled to the side and drew his sword as a hand the slammed at the floor beneath him, Senshi leaped forward digging his blade through the corpses, yet the blade just hit hard wood beneath him.  The blade made no contact, Senshi then saw a fist ram him in the side, it sent him flying he rolled next to the candles and felt the small lantern fall out of his pocket, he reached for it just as the creature loomed over him, as his fingertips touched the small red lantern it came to light, as it did all the others went black. The spirit froze, both of them illuminated by a single lantern Senshi saw his opportunity and charged, a hand made of corpses shot towards him, he slashed his wakashahi and served body’s from bodies. The creature could be touched again, he jumped high. The creature vanished into darkness. Senshi plummeted down raising his sword, and the creatures head loomed into light as the lantern light hit him. Every mouth screamed as Senshi’s blade cut through the head of the creature. The lantern suddenly went out, and the candle lit up again there in the middle of the room was a pile of corpses, all dead. Senshi could now see that in the middle of the body’s were in the middle of the room he saw a small pedestal, he pushed the top off. To see a flicker of metal as the top pushed off to show a horde of bronze pieces.

This is as far as I got, before realising that I hit my 500 word limit a long time ago. I just got on a writing spree. I will evaluate the story in bullet points or chapter briefs in another post.

I did this for a number of reasons, me making a story helps me build an environment for the character, which also inspired me for my final piece, I have decided I am going to take the execution scene at the end of the story, and make a environment art piece of it.