If don't want swordsman Knight, how about make her to using Scythe instead like Gray?

just suggest don't make him as Yuhao's twin because this way will lead to be same path at least in earlier plot. how about set him to born from another concubine or Dai Huabin's twin as talentless one like Yuhao (innate spirit just rank 1). based plot that will develop, it seems that his tiger spirit will be mutated/corrupted to weakest state by demonic attribute. and how about give him a berserk state like Tang Wulin's GDK in DD3.

will Kai get devil fruit? my suggest: 1. Kami Kami no Mi (paper), similar with Konan's jutsu [Naruto] 2. Jiki Jiki no Mi, he is the one who eat this fruit, not Kid 3. Neko Neko no Mi Model: Lion. 4. Fuwa Fuwa no Mi, set Golden Lion Shiki to death somehow and he will eat this fruit 5. Riki Riki no Mi, this is Jesus Burgess's fruit and he will obtain it before Kurohige Pirate. Also make Bonney and Robin (meet her in paradise) to join Eustass Pirate.

Rising of Spear Hero

it should be fifth emperor or gouko, not fifth yonko Yon: four kou: emperor

so, Teach will show up earlier. Will he choose to immediately betray Newgate and Shiki or still hide behind them if he eat it?

if we treat Haki and Soul Force as same thing, I think Yonko equal with 1 star Legend Ranked. Also since demon spiritualist have a complicated method to control and develop soul power (Cultivation Technique) in many ways, they can be overpowered them if not limited by rank cultivation like in One Piece world. and in physical ability, I think demon spiritualist still stronger since they have zoan hybrid form by integrating a demon spirit. Moveover, they can change Demon Spirit that can influenced their natural power. When someone become Demigod, i think their control over element (power of law) can be stronger than Logia though it lost in range attack and versatility.

wish Robin be like X Drake. so when her identity almost be found out by World Government, somehow she'll betray marine by killing the agent and destroy branch so she won't be caught so easily. If anything go well, she can become make contact with Revolution Army when she become pirate and maybe somehow she still have connection with marine as SWORD's member.

will the shot injury target?

the most possible weapon that he can create is crossbow and catapult. and if he creative, he can draw design of automatic crossbow.

next update

suggest. Give Tang Feng a ring, necklace, bracelet or something else. when Tang Feng get a first ring, it'll trigger some effect and become Spatial Storage and there's many archery techniques from Holly Arrow Village inside it (MC is cheif's son and it's legacy from his homeland). suggest technique: a. Tri-Star Shot: materialize three of arrow that allow him to use different spirit ring in each arrow. b. Living Arrow: It allow him to control arrow's line by spiritual power c. Concentred Shot: Increase firepower of arrow by applying more spirit power in arrow d. Illusionary Shot: create illusion of dozen arrows that hide the real one when it's released. e. Thousand Miles Eye: kind of spiritual training like Purple Demon Eye but it more focused in increasing straight line vision and predict the target's move. f. Footwork Art (you can decide what kind footwork technique that develop by Holy Arrow Village)

set MC to break through after the old man accept him as his discipline and they'll search a spirit ring before training is started. The reason is the old man will give mc a medical pill after he acknowledge MC. Maybe Mystic Water Pill (it's appear in Douluo Dalu 2). And when he reach rank 18 or 19, he will eat Spirit Ascension Pill to raise his level to rank 20.

since world's rule make him cannot breakthrough, how set him to use that energy to refine to strengthen his body and grant a mutation to his spirit. So, he will be superior after spirit awakening and get mote attention and source to cultivation from his clan.

try to read Bowblade Spirit. this series is shown how strong archery techniques can become.

how about set MC age as 17/18 years old instead? and this is my suggest: 1. Spirit Bone, he will obtain skull bone that strengthen his spiritual after he get his first spirit ring. It'll be good if you set him Spirit Bone Fusion. 2. Get a Immortal Herb that reform his body and increase his talent. 3. Accidentally he is found Set of cultivation method and archery that not inferior that Tang Sect's Techniques. 4. Second Awakening (you can decide when and how it can happen). 5. Enlightenment

i think one spirit is enough. and this's just suggest, Instead holy bow, how about make his spirit as darkness book. His spirit won't have any set inclination, so it'll grant him a freedom to grow in whatever direction he wants. also having darkness type spirit more understandable for him to lost his sight instead having holy element. pairing of light and darkness possessor, reverse version of Sealed Divine Throne.

since cover is Qian Renxue, Is she main heroine? and what is MC's spirit?

instead chidori, i think it'll better for him to learn shiden. it doesn't need sharingan and be able to use in middle range, so it won't require too much chakra. Also, since mc is still young, it unreasonable to compere him with otsusuki when his father cannot complately defeat them. And sharingan is not useless. Let's think about this, if sharingan's insight and sensory is still hard to track otsusuki's move (Isshiki), how can normal eye do it?