This manga is really chill, poetic and sweet.... I don't really feel the urge of wanting them to be together at once but I'd like to enjoy the ride along with them as they learn about each other and change each other step by step... not as easy to find in an SoL as you'd think
@ThePaulBunyanTrophy First I wanted to think it was something about "across the aisle", but then I saw that in the previous picture they actually had five kids wide list, meaning it'd be a strange bus (more like an airplane), but that could happen.
But then I found this, so extra seats is probably what it was all about: http://japan-enkai.com/ja/wp/wp-content/uploads/2015/04/%E3%83%90%E3%82%B9%E5%BA%A7%E5%B8%AD%EF%BC%88%E5%A4%A7%EF%BC%8901.jpg
Link to whole page: http://japan-enkai.com/ja/charterbus/bus-seat-arrangements/
Ooo, I even found an English page for simpletons like me:
http://japan-enkai.com/charterbus/bus-seat-arrangements/
(Auxiliary seats are there described as 'flip-out seats')