Bad End Senerio: Reiji finds out that Rin went to go see Akoi again and he goes and beats him down for it. Rin hears about it and rejects Reiji for what he did and "calls off" the marrage. Reiji goes insaine and kills Rin in a fit of rage. But after seeing what he did he kills himself. 10 years later after graduation from highschool at the grave site for the 3 (Rin Renji and the mother (forgot her name!), Kagami and Mimi are paying their respects when Akoi and his wife Boin approch. After a brief chat with the girls Akoi renews a swear he made after she died that he would never let something like this happen to another child ever again.
Good End Senerio: Akoi confronts Reiji about the "marriage." After a heated argument Reiji sucker punches and knocks out Akoi. In a fit of rage that Rin saw Akoi again he locks Rin in her room and decides to "consumate" their love then. Akoi, after waking up, realizes that Reiji is going to do something bad ro Rin. He runs as fast as he can to Rin's house and gets there just when Reiji is about to rape Rin. After a fight Akoi manages to to get the upper hand and knocks out/dazes Reiji long enough to save Rin. The police come and arrest Reiji for atemped rape of a minor and he loses custady of Rin. A Year later Akoi with his new Wife/GF Boin adopt Rin as their daughter and they live as a happy family. the end.
This will be one of the two possible endings.