As this ending can be achieved coming from two very different branches, the plot varies depending on which branch is taken. The scenes in Paris, however, are identical, including Makoto's arrival at the airport.
The plot of Together via 33322 is almost identical to From Kotopi to Se-chan up until Setsuna's departure for Paris, with minor dialogue and scene differences.
Some time passes after Setsuna leaves for Paris. Makoto and Ai are shown having sex at the Radish, where she has taken up Setsuna's previous position. Ai is happy that she and Makoto are finally connecting, but she soon finds out that she and Makoto have very different ideas about what their relationship is.
Ai is stunned to find out that Makoto is planning to go to Paris to reconnect with Setsuna and that he has only been waiting for his passport to be approved. She says that everyone thought they had broken up, and that she and Makoto were a couple now. Makoto replies that Setsuna is still his girlfriend, and he explains that what he and Ai had been doing was just sex. He thanks her for keeping him company over the time Setsuna was gone. Ai is crushed.as he leaves for the airport.
Youko takes a confused Setsuna to the airport and tells her that she's here to meet someone she knows. Youko points out the gate he'll be coming from, and Setsuna is stunned when Makoto walks towards them. He stops, seeing Setsuna standing there, and simply says, "I love you." On the verge of tears, Setsuna echoes his sentiments, and starts to run toward him when Youko brushes past her, overjoyed, and wraps her arms around Makoto. Both Setsuna and Makoto are surprised by this, as Youko expresses her gratitude that he came for her and that she loves him. Makoto, clearly unsure what to do, stammers an agreement. Setsuna is unable to process what she's seeing and freaks out.