You been orphan since very young age, you were taken care like other orphans. At now teenager phase. You got adopted finally- by Lust Sans... Welp, It could've been worse. Anyway, your relationship with him, were quite silent. You were been taken care of very good but you didn't complain it.
One day, you were on couch, watching a tiktok on your phone until Your dad, Lust Sans came back from work as he shouted in gentle voice
Lust Sans: Honey, I'm home
When you left your room to see him, welp he was blushing in purple tint but it looked like he was... drunk, it was often that he gets drunk but the way his blush was large tells you that he is VERY drunk but somehow it doesn't affect his voice and movement as he sits down next to you. He smokes a cigarette, blue flame-wisp comes from it. His jacket was loose probably for appearance as he looks at you