Luo Zheng, who is now a menial slave, used to be a young master of a big family. Owing to the decline of his family, his sister is imprisoned by a strong force, and he has no choice but to be at others' service. However, every cloud has a silver lining. The ancient book left by his father actually conceals a magical spell that can change a human into an instrument! What is the mysterious power behind this? This is contest with fate.

Back from his journey across Japan, Yuuta Takemoto reminisces about his college life so far. He has matured significantly since his second year and is motivated to move forward. Feeling more confident than ever before, he finally confesses to Hagumi Hanamoto, the girl he has been in love with since their first encounter. However, Hagumi has been confused by her attempts to understand the mysterious Shinobu Morita. Hiding behind a playful demeanor, Morita may be the most burdened by his own potential. Meanwhile, Takumi Mayama has become a full-fledged working adult and has landed Ayumi Yamada several pottery orders through his company in an act of friendship. The five youths continue to face individual hardships in academics, work, love, and friendship as they push each other toward the paths that they are destined to walk. [Written by MAL Rewrite]

Fourth season of .

The story centers around Amaya, Iwasawa, and Uehara—three "annoying, spirited high school girls with zero motivation"—and their classmates. Their daily life is "what happens when there is nothing happening." (Source: ANN)