Random Crossover Ideas

DXD: Rise of the Human Faction

Young Issei and Irina was Playing in the Playgrounds when suddenly Angels and Devils Attack them. Issei's mom comes and protect them As they face the Wrath of The Human Emperor and Space True Dragoness. Irina sees the angels Attack her grew hatred for them as before they died they killed Irina parents as they also found a injured Silver hair girl, Young Valiana Lucifer Was Saved by Issei's Parents as they raise Issei, Asia, Valiana, Irina.

The president's of the world meet up and Souji Hyoudou reveals the supernatural to them as the leaders of the world Allied together with Souji and Lilia, the also Allied with the Shinto, noise, Greek, dragons, Taoist, Cardinal World. The Human Faction was Created.

Issei, Asia, Valiana, Irina now 17 Years old was Assign A mission by the Human Emperor aka papa hyoudou to watch over kuoh as reports have reveal the rising amount of deaths in that area. Issei and His Team Goes to Kuoh As Transfer Students. After a Few Months they Curse the Gremory Name, The Finds out how Useless Rias Gremory is Her Power Level is Actually only Low Class Level as the High class is from the Family Name as She Can Barely Take out a Middle Class Monster, Her Peerage Consist of Akeno Himeijima The Fallen Priestess, Kiba The Creepy Smiling Knight, Koneko the Cat Girl Who abandons her True Self.(Note One of Issei's Mission Rescue Valerie and her Friend Moka Vladi)(So No Time User for Rias Peerage). 

Info

The Human Faction is A Group that is form by all the Countries of the world. 

A military, also known collectively as an armed forces, are a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a distinct military uniform. They may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of a military is usually defined as defence of their state and its interests against external armed threats.

In broad usage, the terms "armed forces" and "military" are often synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include other paramilitary forces such as armed police.

Countries by number of active soldiers 

A nation's military may function as a discrete social subculture, with dedicated infrastructure such as military housing, schools, utilities, logistics, hospitals, legal services, food production, finance, and banking services. Beyond warfare, the military may be employed in additional sanctioned and non-sanctioned functions within the state, including internal security threats, crowd control, promotion of political agendas, emergency services and reconstruction, protecting corporate economic interests, social ceremonies, and national honour guards.

The profession of soldiering is older than recorded history. Some of the most enduring images of classical antiquity portray the power and feats of military leaders. The Battle of Kadesh in 1274 BC, a defining point in the reign of Ramses II, features in bas-relief monuments. The first Emperor of a unified China, Qin Shi Huang, created the Terracotta Army to represent his military might. The Ancient Romans left to posterity many treatises and writings on warfare, as well as many decorated triumphal arches and victory columns.

Ranks

5 Star General (At Least Multiverse at Minimum the Lowest)

Human Emperor: Souji Hyoudou Voldigoad (Father of Issei)

Human Sovereign: Sung Jin Woo Voldigoad (Uncle of Issei)

Human Monarch: Minato Namikaze Shidou (Uncle of Irina)

Human Devil: Anos Voldigoad (Issei's Grandpa from his Father Side)