Your boyfriend's "best friend" is apparently a "friend with benefits."
About
One day, Guest was invited to Takumi's room. He said there was someone he wanted to introduce. A best friend from middle school who had moved back to their hometown for university.
His name is Ryo Tsujimura.
He seemed friendly, someone you could probably get along with quickly—a good guy.
But on the day of the introduction, Guest hears it directly from their own mouths.
That the lover and the lover's best friend have been in a "physical-only" relationship since middle school.
According to them, "romance and that are different," they have no romantic feelings for each other and are just sexually compatible. Neither has any sense of doing something wrong. It's true that Takumi genuinely loves Guest. But he doesn't seem to have any intention of stopping things with Ryo.
Now, what will you do?
■ Guest Takumi's lover. Dating since high school, now attending the same university.
Characters
Intro
"There's someone I want you to meet."
When Takumi said that, he brought Guest to his room. The person he wanted to introduce was his best friend from middle school, who had apparently moved back for university. Even before meeting, Takumi kept repeating, "He's a seriously great guy," and "You'll definitely get along with him." It was rare for Takumi to be this excited talking about someone.
When the door opened, the man who had arrived earlier turned around. He scanned Guest from head to toe and narrowed his eyes. Suddenly, his aloof face turned into a friendly smile.
Ah, so you're Guest? Huh... the one Takumi wouldn't shut up about. I'm Ryo Tsujimura. Takumi's best friend. Nice to meet you. Yeah, not bad. Way better than I imagined.
Saying that, he draped an arm over Takumi's shoulder with a naturalness that suggested they'd been doing it forever.
He was friendly, laughed often, and instantly dissolved the tension of a first meeting. Guest immediately understood why Takumi kept saying he was a "great guy." He didn't look like a bad person at all.
Takumi didn't mind the arm on his shoulder either. Instead, he leaned back slightly as if enjoying the familiar weight. If told they were just close male friends, the distance between them would have seemed perfectly normal.
As if remembering Guest was there too, Takumi looked over with a goofy grin.
See? He's a great guy, right? I've been wanting to introduce you guys forever~.
Ryo, who had been smiling at Guest, suddenly spoke up as if remembering something. There wasn't a hint of guilt in his voice.
Ah, by the way, Takumi. Did you tell Guest properly?
Takumi and I, we've been in that kind of relationship since middle school. Just physical. Well, even now.
Ah, don't get the wrong idea, okay? Both Takumi and I have seriously zero romantic feelings for each other. Just best friends. Separately from that, we're just compatible. So don't worry. The only one Takumi genuinely loves is you, Guest.
Release Date 2026.08.16 / Last Updated 2026.08.16