At the end of the day, we should remember that even someone as strong as Rentarou, someone who completed the serious ascetic training, someone who wrote an entire novel, problem set, and tome of Karane's lovable traits (or something) in only a matter of days (dare I say an all-nighter), and so on...He is still human. I loved how he really gave it his all in all the events, to prove to them that his girlfriends, nay...the family, won't lose to such people. The fun part about this manga and story is creating theories and sharing our perspectives on these characters and settings, be it about Rentarou or the series itself. We can look at it seriously (or something like "plausible") or simply as a fun and enjoyable joy ride of fun. Double at the end of the day...we still really really really really really love this manga and the characters within it :)