*FLASH BACK*
Kenkyo and some of his friends went to the Ramen shop at the invitation of Yamada who was celebrating his anniversary with one of his juniors.
"Ramen shop? Why not just a restaurant?" protested Suto, a boy known to Yamada and Kenkyo's friends.
"Shut up! I haven't worked like Takahashi Shinsuke-san yet. So I can't treat you to an expensive place yet."
Yamada's words, made Ayumi, Yuko and Kenkyo laugh. They do know Kenkyo's relationship with Shinsuke. Moreover, Suto. She is the nephew of Shinsuke's ex-girlfriend.
"Kenkyo-senpai, isn't that Takahashi-san?" Ayumi, Yamada's lover points the direction of Shinsuke's whereabouts with...
"Naomi oba-chan?" Suto added.
...his ex-girlfriend, Maeda Naomi.
Even the five teenagers saw Naomi briefly kiss Shinsuke's lips.
"We-sama! What a shame, oba-chan." Suto felt bad for Yamada's seatmate.
"You've been kissed or kissed Shinsuke-san, haven't you?" Yamada somehow sounded like the media covering gossip news.
"Once." Kenkyo answered curtly.
"On lips?" Yuko was no less curious.
Kenkyo shook his head.
"Surely Shinsuke ji-san just kissed your forehead, or your cheek." Suto did not want to miss picking up the news.
Kenko nodded.
"He definitely doesn't love you. He married you because of responsibility. And see? You are often left in the apartment. He only comes home once a week" Yamada said seriously making Ayumi lightly smack her lover's arm.
"Don't listen to Baka Yamada, Kenkyo-chan. He's a pervert who has nothing to do with kissing. I'm sure, Shinsuke-san loves you." Yuko comforted Kenkyo who looked like he was about to cry.
The four of them are friends, so there's no secret whatsoever. They even attended the Shinsuke-Kenkyo wedding ceremony at the shrine.
Suto felt sad. But Yamada did not feel there was a dark aura surrounding him. He made his move even more.
"Even you have to hide your identity as part of Takahashi. Your father-in-law, you call ji-san. Ah not to mention your call to Shinsuke-san. You call ji-san too, not Shinsuke-kun, or anata. And five months of marriage Don't you ever kiss? I knew it. Shinsuke-san actually married you out of responsibility, and actually he still loves Naomi-san."
PLAKK!
Yuko slapped Yamada's cheek. His mouth could not keep still.
Suto also hit Yamada's chest because Kenkyo was really crying.
"Kenkyo-chan.." called Suto. "Of course Yamada isn't completely right." Suto rubbed his favorite friend's shoulder.
"What if it's true?" Now Ayumi, who had been silent for a while, spoke up.
His gaze turned to Shinsuke and Naomi who walked away from there.
Yamada shifted his seat closer to Kenkyo, and whispered something.
Something that became the basis for Kenkyo kissing Shinsuke. That is, the sentence
"If Shinsuke-san never kisses your lips, or he refuses to kiss you, it means he doesn't love you"
(END OF FLASHBACK)