Before lunch, Qu Yang and Kotonoha receives a mail from the chief of radio club (Note: Unlike other countries, Japs transmit-receive emails instead of messages via cellphones, so iphone has a poor reception in Japan). They are summoned to radio command at noon.
So Kotonoha goes to Class Three, to apologise to Makoto and Sekai for her absence of lunch.
Then something negative happens. Something beyond Kotonoha's expectation, but is expected by Qu Yang.
At radio command, chief just says a database of old-schools like "good work, keep it up". Qu Yang laughs in heart: "Damn Japs, turning everyone even a juvenile into a politico."
"I'm going to the roof to meet Makoto-kun." Kotonoha says as they leave radio command: "How about Kuyou-kun?"
Qu Yang: "I'll just wander around."
As she walks away, Qu Yang follows her silently. Then as he expected, Kotonoha stands before the door to roof, stunned.
On the roof, Sekai is laying on a bench, with Makoto on her. They are tightly kissing each other as if glued together. Makoto's hands are squeezing Sekai's normal-sized breasts, like squeezing plasticene.
Qu Yang raises his left arm, there is a watch-like instrument on wrist, only visible to him, a gauge to monitor Kotonoha's berserk mode.
The displaying gauge is measured by percentage, divided into four levels. Now the gauge is filled by 10%. The progress has begun, but still long way to go.
Qu Yang pats Kotonoha's shoulder. She turns, with water flows in her beautiful eyes. The girl tries to say something, but eventually doesn't speak.
Qu Yang sighs and holds her in arms. The girl is more delicate than her thought. He takes her away from this heartbreaking place. Luckily few students walk in hallways at this time, or rumors will be generated by seeing they are so "close". However Qu Yang doesn't care about rumors at all.
"Why…why they do this? Is me not good enough? Is me don't let Makoto-kun touch my…my chest?" Kotonoha seems asking herself, or asking Qu Yang.
"The previous one." Qu Yang assures: "Sekai seduces Makoto by her body. If you copy the same tactic, then you can't win with warrant. Believe in yourself, believe in your conviction, make him loves your heart, not your body."
He put hands on Kotonoha's shoulders, with some strength: "Remember, you are who you are. You are the unique Kotonoha Katsura."
Kotonoha's eyes slowly regain their bright shine: "I know what to do. Thank you very much for encouraging me, Kuyou-kun."
Seeing his words are effective, Qu Yang releases her shoulders with a warm smile. He glances at the gauge, the reading reduced to 9%.
There are bunch of chances to increase degree of Kotonoha's berserk mode. He must keep the progress slow and stable, that's the key to make this mission possible.
Never hasty to complete a mission, good and smooth are prior to fast and crude.
They walk to classroom. Suddenly Kotonoha reminds something and seems eager to ask Qu Yang, but you know, she's too reserved to ask.
Qu Yang: "Don't worry. I'm not Sekai Saionji."
Kotonoha blushes: "Kuyou-kun is so intelligent, so proficient at martial arts, so gentle, so scrupulous…knows everything before it happens…so Kokoro admires you so much…I'm so happy Kuyou-kun's here with me."
Qu Yang puts out his little finger: "Because we are friends. Friends for life."
Kotonoha crosses her little finger with Qu Yang's: "はい！We're friends for life." Thanks to Qu Yang, she now has something to counter Makoto and Sekai's betrayal: Friendship. Despite it's based on a mission.
After school, club time.
Radio command is situated in the middle of the façade of the main teaching building, right to the campus. Which means if you're a sniper, you can have entire campus under control if deploy sniper rifle on the window of radio command. That's why Qu Yang and Kotonoha spot Makoto and Sekai are rushing outside the gate with hands hold together.
Kotonoha: "I want to follow them."
Qu Yang: "I'm going with you."
With the help of Qu Yang's ace agent skill, Kotonoha follows them like as if she's stealth. Meanwhile, Qu Yang keeps an eye on the berserk gauge: The reading is increasing, slow but steady.
Unwilling to admit, but now Makoto and Sekai behave like a real couple: Their hands hold together, and seems in a hot chat. Although those are mostly Sekai's unilateral actions, but Makoto shows no rejection, even glad to accept.
It's getting late. Kotonoha follows them to the station, but she's on a different platform. Makoto's home and Sekai's home are on opposite directions, train arrives, they are going to split.
Qu Yang is with Kotonoha all the time, he sees her eyes widen since far away, Makoto and Sekai are sharing a goodbye kiss (Note: Strangely, Kotonoha wears glasses in Cross Days, but she also has a keen sight even capable to identify fast-moving objects far away. For example Kotonoha can see Makoto and Sekai kiss each other on a passing train or on platform from a passing train. One possible explanation is that Kotonoha is good at watching objects from middle and long distance, but has some difficulties at watch objects very close to her for a long time, so she wears glasses when reading in library. But there are two more possibilities: The character designer, Junji Goto, says he adds glasses to Kotonoha since during the making of Cross Days, someone tells him that Kotonoha is suitable to wear glasses. It's also possible Kotonoha is added with glasses in order to confine her enchantment, so she won't be a threat to main heroine of Cross Days).
Can't bear anymore, Koronoha turns and buries her head into Qu Yang's chest. Her shoulders are trembling, but no tears.
Qu Yang gently fondles the girl's silky hair, with a sympathetic sigh.