I'm not sure specifically what 'love shuttle side story' is about as it could be a very specific or self - created concept. It might be a side story related to a love - themed story, perhaps about different characters' relationships or events that are tangential to the main love plot.
As we don't have much detail about this 'love shuttle side story', it's impossible to say for sure who the main characters are. However, if it's a love - related side story, it might feature characters who are in love or have some sort of romantic connection. Maybe there's a protagonist who is on a journey of self - discovery through love, and a love interest who helps or hinders that journey.
I don't know for sure. Sometimes manga availability can change. You could try doing a search on Mangago or checking related manga forums for the latest info.
There were two interstellar travel novels that he could recommend. The first book was " Becoming a Legend in the Interstellar Era ", and the author was a guard of the Southern Dynasty. This novel was about the protagonist who received a strange bracelet and transmigrated to a sci-fi world where robots attacked humans. He became the commander of a small organization in the human camp. In the story, the protagonist discovered that psionic power was not just a source of energy, but it also gave consciousness to the robots that used psionic power. The second book was " Please, Let Me On." The author was Traveling Mountains, Fog, and Rain. In the story, the protagonist, Ye Xing, had healing abilities. He traveled to the galaxy during the apocalypse and became a violent mech soldier. These two novels both involved the plot of intergalactic travel.
A shuttle carrier was an existence or tool that could carry people or items through different time and space, different dimensions, or different universes. In different novels, the shuttle carrier could be a spaceship, a portal, a space-time tunnel, a prop that could allow people or items to travel through different worlds, and so on.