On the Way to Becoming a Starship in a Crossover, We Still Have to Cuddle

Yuantian has a System that lets him transmigrate between different worlds. Drawing on resources from each world, the Soulsteel fused with his soul continues to grow, and will eventually become a starship capable of sailing across the sea of stars. Confirmed worlds: everyday-life crossover (My Youth Romantic Comedy Is Wrong, as I Expected, The Quintessential Quintuplets, Love Live!, and others), Is It Wrong to Try to Pick Up Girls in a Dungeon?, Azur Lane (extinct for two hundred years), Girls' Last Tour, Problem Children Are Coming from Another World, Aren't They?, Heavy Object. To be decided: Unbreakable Machine-Doll, Angel Beats!, Cyberpunk: Edgerunners, Date A Live, Black Bullet...