Mash-Up: I'm Not A Substitute

In a world where relationships are often built on pretense, Takashi Kitahara finds himself caught in a web of emotional manipulation. Surrounded by girls who openly declare him a mere stand-in—be it for lost loves or familial ties—he grapples with the harsh reality of their intentions. Kasumigaoka Utaha, Sawamura Eriri, and Yasuraoka Hanabi each make it clear: he’s just a substitute for someone else. As they distance themselves, Takashi experiences a mix of frustration and introspection. But what happens when he decides to voice his feelings? With a bold declaration that he may not be interested in any of them, he challenges their assumptions and embarks on a journey of self-discovery and authenticity.