Ok, I know Undertale is meant to be a funny, adventurous, heartwarming, creative, but at the same time emotional game, but it means a lot more to me than just that, and here is why.

My cousin, who was my best friend originally introduced me to Undertale. It was his all time favorite game. He was 16 at the time, I was 8. I didn't quite understand the game, but I played it so many times and began to understand it better. Sans reminded me of my cousin a lot, and he became my favorite character. My cousin said I reminded him of someone that could be Sans's perfect puzzle piece, like nobody in the game. So I made up my own character that was me, but I went by my middle name instead. At the time I went by my first name,  Daniella. That character was different than my current oc, this is it from gacha from what I remember it looking like...

Twin buns were my favorite.

My cousin loved it, he even made me a Undertale fan game and my character was in it! That made my whole life 10 times more amazing. I loved the game ever since it came out and played it over and over again with my cousin, until he broke up with his girlfriend. He loved her very much, and she loved him. But she was awful to me. My cousin didn't find out until 3 months after they were dating and immediately broke up with her. His ex turned into a pretty much obsessed psychopath and tried to hurt me many times (strangle, hitting, kicking, throwing stuff at me, etc.). My cousin always saved me from that awful woman. But, she tried to hurt me again. It didn't harm me too much, but it was scary to see my cousin beat her until she was unconscious. Luckily, he didn't commit a crime and called the police. After the incident I haven't heard anything about her but that made my cousin and I become closer than ever. He reminded me more and more of Sans.
One day, he disappeared. I never saw him again. I was only 10.  A year and a half later I found out what happened. He had been kidnapped while staying in a sketchy motel, but was found with multiple deadly injuries. He was hospitalized but had almost a positive chance of that hospital bed being the place he died. He chose to die, he told the doctors to pull the chord because he was in so much pain. He didn't want me to find out right away so I would have time to warm up to him being gone. I found out when I was 11. These weren't his last words, but they were close. "Tell Danny and Olive she was my best friend." I now only go by Olive. I vow to never go by any other name, except my OC's other names, Liv, Livvie, Olivia. I used to draw pictures of my old oc and sans hugging. I was obsessed with Sans for the longest time, and I still am. I miss my cousin so much, I can't hope enough that he hears me say that.
It's hard for me to talk about this, and I hope you understand. I had to stop halfway through because I wouldn't stop crying. I hope nobody has to deal with losing someone so close.
My cousins same was Collin.

I love you and miss you, Collin. You were my best friend and still are. You were a Sans in a crowd of skeletons.