Go! Ina Junior High Ping-Pong Club - Vol. 9 Ch. 101 - I've Come from Tonga to Learn the Abacus

[MangaDex]

 

[pip3]

having my school all to myself and my friends for the whole summer would have been legendary, especially if it had a pool.

 

[jiny09]

having my school all to myself and my friends for the whole summer would have been legendary, especially if it had a pool.

Their camp's only a few days long, but I get what you mean

 

[Doomroar]

I actually didn't knew what element you had to combine with manganese oxide in order to get oxygen gas, so i had to search and the answer was hydrogen peroxide