As a Tuna in Another World

After a battle between two ROBs resulting damages everywhere. Kyle died by having his fate cut off too early in his life. Fortunately for him, his fate went out of it's way to merge with another's! After being given a new chance to start his merged life in a world he choose, he thought everything would be better. But no one told him, he was merging with the famous tuna. Additional Tags : Gender Bender, Honkai Impact, Fate Stay Night, Isekai?