EP 01On Your Marks!Eita Izumi transfers to a new high school in his junior year. Upon arriving for his registration, he meets his childhood friend, Haruto Soma. They play a game of baseball, when Haruto reveals that Mio Natsume (Eita's childhood crush), also attends the high school.
EP 02QuestionHaruto works up the courage to ask out Morikawa but does his confession go as well as he had envisioned it?
EP 03AndanteThe group reconnects after their trip to the aquarium but things take an unexpected turn when Ena takes an interest in Eita.
EP 04Full SwingEmotions run high as Haruto feels emboldened enough to finally confess his feelings, but will his words be able to reach the one he cares about?
EP 05Rolling StonesThings change between Haruto and Hazuki, and both of them try to deal with it in their own way. Mio, on the other hand, is trying to come to terms with her feelings.
EP 06RestartTension is on the rise, as Haruto seeks guidance from Eita, on how to respond to Hazuki's message.
EP 07Snow DayMio remembers Eita's kindness in middle school and starts to question her relationship with him. What will happen as Ena begins to spend more time with Eita?
EP 08High Dynamic RangeEna finally decides to ask Eita on a date despite Mio's objection. Everything seems to be going well until Mio bumps into them.
EP 09AnswerMio finally chooses to confront her demons. In the meantime, Eita is working through his own dilemma with Ena.
EP 10Childhood’s EndEita seems to be coming to terms with his feelings. In the meantime, Mio is starting to learn what is truly important to her.
EP 11RoundaboutAs entrance exams rear their head, Eita can't help but remember Mio's expression when she noticed his phone. What will happen as their paths start to diverge?
EP 12Get Set, Go!Eita fails his entrance exam. He receives a text from Mio telling him she passed the test for her first choice. It's graduation and everyone says their good-byes. Eita tells Komiya that he was happy when she confessed to him but still, he can't go out with her because there is someone else he likes. After he left, she is seen crying in the club room. Eita runs into Mio at Joei; he confesses to liking her and she reciprocates.The original anime Just Because! focuses on subtly portraying the feelings of a group of high school students nearing graduation. Near the end of second semester at third year, when students have very little time in high school left, and are just waiting for graduation, the appearance of a new transfer student begins to change what remains of their high school lives just as they were about to graduate. (Source: Anime News Network)
