Tensei Shachiku no Cheat Saien ~Ban'nou Skill to Benri na Tsukaima Yousei wo Kushishitetara, Kidzukeba Tairiku Ichi no Seisan Kyoten ga Dekiteita~ - …

[MangaDex]

 

[elemint5]

mushrooms scare me also that gramps is going to die from shock he gets surprised by everything lol

 

[Quarterdane]

I'm guessing the anti-aging effect on the beer is a reference to the old misconception of "a little bit of alcohol is good for you".

 

[Romisterie]

Wouldbe funny if the old guy after waking up became young again.

 

[WillTell]

and then disaster strikes! Someone steals the precious mushroom, and our bold protagonists must hunt down the thief! This adventure takes them across the world, only to find out the mushroom just walked away.