Shoukanshi ga In-Cha de nani ga Warui

In an era where people can freely travel between other worlds and reality like a video game, Tooru Fujima is an introverted guy in high school who thinks of extroverts as his enemies, and considers a confession of love from a girl to be a punishment. "I can only depend on myself." With this in mind, Tooru had decided to start making a living as a summoner in another world, but monsters are needed for summoning magic to work... And since there are none, he's been living day-to-day, making some income by harvesting medicinal herbs and such. Back in the real world, Tooru goes his own way, ignoring the advances and confessions of love from beautiful girls. But one day, he meets a penniless girl who's good at wandering the streets... And they end up living together, becoming partners, and even getting married?! Source: HobbyJapan