1026598
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original
2023
2boys
2d
animated_skeleton
brothers
digital_media
duo
high_res
hot_spring
male
male_only
monster
nude
nude_male
onsen
papyrus_(undertale)
partially_submerged
ribs
s2ames2
sans_(undertale)
siblings
skeleton
star
stars
undead
undertale
undertale_(series)
water
tags