A de Hajimatte, Ru de Owaru

Ichiyou has been in love with his childhood friend, the novelist Shiro, for over 10 years. Although they started living together when Shiro went to college, there’s been no sign that Shiro is interested in him romantically. That changes when Shiro is asked to write a romance novel, and Ichiyou seizes the opportunity—volunteering to play the role of Shiro’s "boyfriend" in hopes of catching his attention. A surprise kiss, a rain-soaked stop at a love hotel, and a “first” night that sends Ichiyou’s heart racing... As the unexpected sweetness of their new dynamic unfolds, Shiro finds himself captivated by Ichiyou’s open and sincere feelings. Will their relationship finally move beyond friendship, or will Ichiyou be left longing for more?

(Source: Overlap, translated)

Note: Includes 1 extra chapter.