The Anime Lad
Koyomi and Shiori meet at his father’s research center, where travel between parallel worlds is common. Their growing affection becomes complicated when their parents also fall in love and plan to marry. The teenagers begin looking at nearby realities as potential family arrangements.
Gigguku
Parallel worlds are ordinary enough to study, but young love makes them impossible to treat as abstract science. Koyomi and Shiori face a painfully familiar family complication with an extraordinary option nearby. Another future feels reachable, even if the cost remains unknown!
Father's Basement
The research setting gives dimension travel a convenient scientific frame, and the young couple’s possible response is dramatically larger than the immediate family problem. That imbalance is the appeal. A recognizable fear pushes them toward an option only their world permits.