A solitary teenage girl struggling to come to terms with her parents’ divorce gains a new perspective through a trip to grandma’s in Yuka Ibayashi’s charming indie drama, The Wonder of a Summer Day (幻の蛍, Maboroshi no Hotaru). Somewhat numbed emotionally, Kanata (Konoha Nogishi) is consumed with a sense of emptiness and has no idea what she wants to do in the future or even what her favourite food is while spending almost all of her time alone even going into school during the summer holidays to keep up her cleaning routine or work in the library.
Part of this as we discover is that she doesn’t have a smartphone because her mother’s (Akiko Kikuchi) business running a small bar is struggling so she can’t join the group chat on phone-based social network LINE, the other girls in any case walking away before she’s fully time to explain even if she were going to. Kanata is certainly a very responsible young woman, often needing to get herself up and out because her mother rises late given the nature of her work, and helping out behind the bar when she gets home from school where she seems to be taking care of all the cleaning needs single handedly simply explaining “we’re supposed to rotate” when questioned by her eccentric science teacher as to why she has to do all of this extensive labour on her own.
The science teacher is also surprised to learn that Kanata has no plans for the summer vacation planning to continue coming into school to do her various jobs, Kanata sadly wiping the word “summer” off the blackboard and cleaning the eraser afterwards. Then again, the teacher’s idea of fun is sitting in a bowling alley watching people bowl, prompting Kanata to begin wondering what fun might be or if there’s something she might like to do after all. “Life tends to provide us something we enjoy” according to the man at the grocery store, but she struggles to find an answer even refusing an invitation from her father to go to a local festival with her younger sister Sumire (Nonoka Ikeda) when he calls to borrow her old yukata.
Part of the reason for her loneliness is rooted in the disintegration of the family unit. Not only is she harbouring a degree of resentment towards her father but has also been separated from her sister and feels acutely divided by the traditional social codes which mean that she and her mother have reverted to her maternal family’s name while Sumire and her father have kept theirs the same marking them as no longer family to the extent that she isn’t quite sure why Sumire regrets not having been allowed to attend their grandfather’s funeral. The situation is compounded by the fact that she suspects her father has a new girlfriend, her shock and distress palpable after spotting the three of them driving around looking like a family a pair of sisters excitedly crossing the road ahead of her while she remains frozen on the spot.
Invited to spend a few days with grandma in the country along with Sumire, Kanata remains sullen and uncommunicative in contrast to her upbeat and cheerful sister who displays an unusual degree of emotional maturity in trying to take the moody teen to task. “You’re not the only person in this world with problems” she eventually fires back fed up with Kanata’s moods and hurt by her most recent barb basically blaming her for their parents’ divorce while insisting that she only makes trouble for those around her. Even so, a trip to find out of season fireflies finally allows the sisters to re-establish their bond with Kanata coming to accept her situation realising that she doesn’t have to cut off contact completely just because they won’t be living together and even if there are many things they may never do again there are plenty more they could do for the first time, like looking for fireflies. “If we keep walking we’ll end up somewhere” Sumire offers encouragingly as they find themselves temporarily lost during their brief summer adventure neatly proposing a metaphor for life and relationships as the sullen heroine begins to repair her fracturing family bonds letting go of her pain and resentment now a little less lonely if only in having shared her loneliness.