No. Popular anime myth that sticking a leek in the ass bring down fevers. Seen it in negi and other mangas. Still leek do help fevers, just in a soup not an anal toy.
Some say he can still smell the scent of onion leek to this day. Poor MC his body just wasn't ready but that why abstinence is always the way especially when onion surprise butt stuff is possible
If you're a Hentai Protagonist, I'm pretty sure anything the girl does can be considered seduction, really.
That ending, though...Hahah, well, the sex was worth it, right...?
TOTALLY WORTH IT! (under breadth, the Lucky Bastard - grr). But Seriously though, a part of her might have LIKED the protagonist "taking responsibility" in the way he did; however, it's the principle of the thing that counts.
Aww man... I wanted some sweeter vanilla at the end. Like a confession or something along the lines of "Take me as your girlfriend then" or " guess you'll be needing a girlfriend to take care of you~"