The underground is used to seeing children fall through Mt. Ebott, not adult humans. Or Homs, for that matter. Will cover pacifist route of Undertale, including the neutral route boss and ending, spoilers for Xenogears, Xenosaga, and Xenoblade!
Crossover - Xenosaga & Undertale - Rated: T - English - Adventure/Drama - Chapters: 26 - Words: 86,958 - Reviews: 3 - Favs: 7 - Follows: 5 - Updated: 5/11/2016 - Published: 3/21/2016 - KOS-MOS, Shion U., Chara, Toriel - Complete