I recommend " The Lonely Man's Amorous Journey " and " The Monster Slayer Emperor ", these two fantasy novels. The male leads are very lonely. Among them, the male protagonist of " The Lonely Man's Amorous Journey " lost his best friend and embarked on a journey of revenge alone, but met many like-minded people on the journey. The male protagonist of " The Demon Slayer Emperor " also thought that he would be alone for the rest of his life, but later found that he had companions by his side. I hope you will like my recommendation.๐