The Anime Lad
Hikari Tsutsui prefers fictional girls and expects little from his classmates. A school punishment pairs him with Iroha Igarashi, an outspoken student carrying a bad reputation. She proposes that they date. Hikari agrees, then learns she plans to move away in six months. His first relationship therefore includes a clearly stated deadline.
Super Eyepatch Fox
Hikari understands fictional romance better than real people. Pool-cleaning punishment introduces Iroha, a blunt classmate surrounded by gossip. She asks him out. He accepts. Then comes the deadline: she leaves in six months. Begin a real relationship while time and reputation crowd the opening.
Gigguku
Hikari has spent years retreating into manga and games, then Iroha walks into pool-cleaning duty and asks him to date her. He has NO preparation for this! Worse, she plans to leave in six months. Their relationship starts with a deadline, putting real pressure on an otaku who preferred romance behind a screen.
Father's Basement
Hikari begins as a defensive otaku who expects more from fictional girls than classmates, while the school's labels around Iroha are ugly and convenient. Her direct proposal disrupts both habits. She asks for a relationship, he accepts, and the six-month deadline prevents the setup from pretending they have unlimited time.