I Got a Cheat Skill in Another World and Became Unrivaled in The Real World, Too: Real World

Yuuya Tenjou's life has been marked by resentment and contempt from those around him, including his parents. His only source of affection was his grandfather, who passed away, leaving Yuuya feeling truly isolated. The abuse he suffers at the hands of others eventually takes a toll, but he finds a glimmer of hope when he discovers a hidden door in his bathroom. This door leads to an abandoned house in another world, where Yuuya gains access to game-like stats and skills, as well as remarkable equipment and resources.