Major Change in 2026 Spring Anime Rankings: 'An Observation Log of My Fiancée' on the Rise, 'MARRIAGETOXIN' Falls
The weekly rankings of Anime News Network, which tracks the pulse of the anime world, witnessed one of the most exciting changes of the 2026 spring season. In the list covering May 27 – June 2, the romantic comedy series “An Observation Log of My Fiancée” rose by a full 7 spots, drawing attention. The main reason for this rise was a surge in viewer ratings in the series' recent episodes. The anime has been praised especially for its handling of emotional moments between the main characters and its high-quality animation.
On the other hand, “MARRIAGETOXIN”, which blends action and romance, moved down 4 spots as a result of this shift. The production, which had secured a solid place in the top 10 in previous weeks, lost momentum this week as competition heated up. However, the series has a very loyal fan base; it is expected to recover in the long run. Both productions are among the most talked-about works of the spring 2026 season.
So why is “An Observation Log of My Fiancée” so popular? The series offers a sweet and funny story revolving around a protagonist who secretly reads his fiancée's diary. As a manga adaptation, the anime provides viewers with both romantic and mysterious moments. On the other hand, “MARRIAGETOXIN” has a unique and bold narrative about a toxic love relationship, which earned it high scores from critics. Although the styles of the two productions are completely opposite, both showcase the quality of the spring season.
Such sudden changes in the rankings raise great curiosity about which productions will end up at the top as we approach the halfway point of the season. In the coming weeks, whether “An Observation Log of My Fiancée” can continue its rise and whether “MARRIAGETOXIN” can make a comeback will be closely followed by all anime fans. The spring 2026 season has entered a period of increasingly intense competition.
