Goodnight Punpun Manga Volume 6 Inio Asano (Mature)

Punpun has finally reunited with the love of his life, Aiko! But she isn't as exciting and wonderful as he remembered. And she doesn't make him exciting and wonderful. In fact, he thinks they're both terribly banal. And now they've done something terrible... Punpun, what do you do when there's no way out? For mature audiences.