It's a good thing the characters are so likable and the tone lightly humorous because this series is nothing but a string of manga tropes with big boobs fan service.

Last volume the creator rushed through all the festivals, and this time, after accidentally getting locked in a room together, the characters zip through the winter tropes, having a snow day and celebrating Christmas and New Year's, setting us up for Valentine's Day and White Day next volume.

To keep up the cosplay trope, a teacher introduced last volume is now a recurring character who ensures all the rest of the characters always have season-appropriate costumes available.

And the latest trope: a transfer student is plopped into the story with the promise of shaking up the main characters' will-they-won't-they status quo.

At this point, the only thing more annoying than the tropes and fan service is the number of supporting characters who don't have names. But all those negatives are still outweighed by the sweet romance and silly jokes. ( )