Sans AU X M!Reader

(m / n) (L / n) is a 19 year old boy and he is frisk's cousin, (m / n) always looks after frisk like his own sibling because since childhood frisk has always been treated harshly by their parents.

(m / n) always knew this since his parents visited Frisk's parents' house and found that Frisk had many wounds and finally Frisk's parents were put in prison for torturing a minor child.

then frisk was adopted by the family (L / n) and became (m / n) sibling, since then (m / n) has always looked after frisk and promised to always look after them.

but it seems that the promise could not be kept because (m / n) had to study abroad and left Frisk together with his parents.

after 2 years (m / n) returned because his lecture was finished and could be with Frisk again, but something (m / n) did not know after he returned he would meet several monsters who were said to have come out of the underground because of a small child.

and that's when he will meet the skeleton monster and make the skeleton monster like him when he meets (m / n) but not only the skeleton itself but the Au from the skeleton as well.

will (m / n) receive love from the skeleton monster or will he just become a friend? curious about what happened? read this book and you will find out the answer !!

[Sans Au = comes from their own creator]

[Male! Reader = comes from the reader himself]

the picture is not mine and sorry if there are many gramma mistakes from this book !!

keyra12 present you Sans au x M! reader and I hope you all enjoy and like this book !!