Konosuba x M! Reader

(Y/N) (L/N) was just a guy trying to live his life, but his bullies and his parents death didn't let him to do so. One day, his only friend, Kazuma Satou, passed away. He couldn't believe he died of shock after pushing a girl out of the way of a slow moving tractor.
(Y/N) liked plants, he even took care of his mothers flowers after she passed away. After Kazuma's death, he became more of a shut-in like him.
He didn't play a lot of games like him, instead he watched anime. One day he decided to leave his house to get some icecream, but he met someone he didn't want to.

Sorry if my english is bad, it's not my first language.