Jitsuryokuha Elite Jin

Talented Elite Jin (実力派エリート迅, Jitsuryokuha Erīto Jin) is a oneshot created by Daisuke Ashihara. It is the second precursor to the World Trigger manga series, the first of which is Trigger Keeper.

Talented Elite Jin is send out to reform the No.7 Base and has to defend them at the same time against the "Neighbourhood".

Creatures from another dimension have invaded Earth! Earth weapons are useless against these 'Neighbors,' but some scientists have created new weapons based on the enemy's technology. Using these weapons, humans struggle to defend themselves from the invaders. The head of the central base has sent the ace soldier, Yuuichi Jin, to help out the failing Base 7, and rescue his son Yuiga Tadashi, who is the leader there. Unfortunately, the problem with Base 7 is, in fact, Yuiga Tadashi. He's a terrible leader who cares for nothing but his own reputation and believes that being the central base leader's son allows him to do whatever he wants. Will Jin be able to fix this terrible situation? - Mangahelpers