>>55700377I had a dream about this one time. Only it was combat - not necessarily friendship, at least at first.
It didn't star Eiko as she didn't exist back then, but was more a proto-Eiko as a lot of her story beats were taken from this old self-insert/OC.
She was researching a ziggurat covered in strange pictograms found within a 'hollowed out mountain that had its own self-contained ecosystem. While in there she was studying the pictograms, noting drawings and statues of unknown prehistoric Pokémon a surprise bit of tectonic activity from a Heatran deep below caused a minor earthquake that awoke Regigigas. Cue a running battle while Eiko utilizing her Pokemon and a more developed power-set try to escape the Ziggurat and hollowed mountain dodging an unrelenting assault from a royally pissed off Regi. When Heatran bursts through the cavern floor the to primordial forces of power start duking it out Kaiju style, distracting Regi from chasing Eiko.
Lamenting the destruction of the ruins and the lost opportunity to learn more of the past she stands at the collapsing entrance of the cavern and decides to re-enter the fray with her team, riding on the back of Flygon or Noivern for more maneuverability, hoping to calm the two titans down.
From there on I see two endings. One, they stop fighting due to something beyond Eiko's control, or she manages to weaken them enough maybe even catching one or both.