Tohma has always struggled with communicating with others, living his life hiding his true self. For him, Naomi was the first person with whom he could honestly express his genuine feelings. Although drawn to each other, their relationship gradually grew distant over time, eventually leading to a breakup. His room remained filled with mementos from his time with Naomi, which Tohma tried to discard, convincing himself he had "already forgotten" her. However, upon touching one particular item, long-suppressed memories came flooding back, and he once again felt the emotions he had experienced back then.