Hard to say for sure. You'd have to look at the details and settings in the comic to determine if it's summer. Maybe the characters' clothing or the scenery could give a clue.
I'm afraid I have no idea who the creator of the 'Black Summer Story' is. It could be a new or emerging writer who has not yet gained widespread recognition. Or perhaps it was created by someone as a form of self - expression, documenting their own memories or ideas related to a summer that had a particularly dark or impactful feel.
I'm not entirely sure specifically as there could be multiple stories with that name. It might be related to a dark or difficult time during the summer. Maybe it's about some personal experiences, a local event, or a fictional narrative set in summer with a somber theme.
The comic version of Bubble Summer had already been loved by many readers, some of whom might have been deeply moved and liked the work after reading it.