Tickletale - The Ticklish Adventure

Long ago, 2 races ruled over earth: 'humans' and 'monsters'. After a vicious war, humans were victorious and sealed the monsters underground with a magic spell in a mountain called 'Mt ebott'.

One day, a human called 'Chara' fell into the underground and met the Dreemurr family. On one dreadful day, Chara poisoned themself and made Asriel absorb his soul in an attempt to free the underground. Asriel took them to their own village to fulfill their final wish, to see the golden flowers that laid in their home town. When they got there, the humans wrongly assumed that asriel murdered Chara, and attacked him. Asriel, not wanting to harm them, left peacefully and returned home. He died in front of his parents, with Chara in his arms and Asgore and Toriel buried both of them under the golden flowers their dust was spread on. Toriel, not wanting to be near the grave site of her own children, moved to the Ruins as Asgore stayed in the throne room. After the monsters heard baiut this, everyone was grieving. But, to avoid their sadness and forget about this, they resorted to tickling to laugh it off. Now the monsters love to tickle eachother all the time and make eachother laugh.

Frisk, a curious child, climbed mt ebott and fell underground. Wanting to see what awaited them. Little did they know, everyone would try to tickle them constantly everywhere they would go, regardless of her begs for mercy.

Also, Frisk is 15 in this and the other humans are 14-16