As SAINT combat android Tou Ryuga enters the lives of Suguru and his friends, disguised as a substitute teacher, Suguru becomes aware that some sort of connection exists between Ryuga and Mahoro. To further understand their relationship, Suguru invites all of his friends, as well as both Ryuga and Saori to a party at his house. At the same time, Mahoro is becoming more and more aware that her view of herself - as well as her relationship to Suguru - is changing the more she time she spends living with him. Originally, she saw herself as merely atoning for causing Commander Misato's death, but as the days go by, she comes to realize that what she is truly looking for is a place to belong, a home to be able to take care of and come back to, and people to care for. In contrast, Ryuga's self-examination shows that he sees his entire raison d'etre as fighting - and defeating - Mahoro. His entire identity is of a warrior who was defeated once but is desperate for a second chance, because without it, he is nothing. The party at Suguru's house, where Ryuga comes to realize that Suguru, despite suspecting the depth of Mahoro's past is still unaware of his role in it, sets the stage for the final confrontation between the two combat androids. However, Suguru's intervention means that the actual duel will take place two days later, in a mutually agreed-upon location. With the time and place of the duel now determined, Mahoro again faces the fact that Suguru still has no knowledge of her impending death. She has already caused him immeasurable pain once, and is left to wonder - it is worth living just a few more months with him if the end will still be same pain.

自从流河来到阿优的学校之后，麻幌的举止变得非常的紧张，可是问她时却什么也不肯说。阿优心想：“流河老师应该也是机械人，他和麻幌之间一定有着某种关系。如果这个推测没有错，那么麻幌不肯说出实情的理由只有一个……”。为了确认流河的真面目，于是阿优在家里举办了烤肉派对，并邀请流河老师来参加，从麻幌看到流河出现时的惊慌态度以及史莱修的举动，阿优更加相信自己的推测……

自從流河來到阿優的學校之後，麻幌的舉止變得非常的緊張，可是問她時卻什麼也不肯説。阿優心想：“流河老師應該也是機械人，他和麻幌之間一定有著某種關係。如果這個推測沒有錯，那麼麻幌不肯説出實情的理由只有一個……”。為了確認流河的真面目，於是阿優在家裡舉辦了烤肉派對，並邀請流河老師來參加，從麻幌看到流河出現時的驚慌態度以及史萊修的舉動，阿優更加相信自己的推測……

優の学校に“流河濤”が赴任してきてからというもの、落ち着かない様子のまほろさん。流河の正体を勘ぐる優は、バーベキューパーティを開き、友人や式条先生とともに彼を招待した。優の推測どおり、流河の正体は、セイントの戦士“リューガ”であった。一方、式条は、彼を気にする優をみて、とんでもない誤解を…。

신임 교사‘류가’가 스구루의 학교에 부임해 온 후 마호로의 모습이 초조하다. 어느 날 스구루는 바비큐 파티를 열어, 반 아이들과 시키죠 선생님과 함께 류가 선생님까지 초대를 했다. 류가 선생님이 나타났을 때 마호로는 매우 놀라게 되는데…