Space Pharaoh ☆ Patra-chan - Vol. 1 Ch. 4

[MangaDex]

 

[DedBeet]

y'know, yeah it is kind of a waste not to eat the seeds, should try it one day when the opportunity presents itself
(watermelon is definitely a favorite of mine though nowadays they're sometimes too sweet and sometimes ripen too much and that gives them a grainy texture, woe is me)