Imagine everything is just Yamato's imagination and Isshin is still in coma without any chance of waking up so he "follows his twinkling blue of the stars" by dying, and this whole manga is just his imagination before he offed himself.
On the serious note, they're so cute. Good for them. See? It's not that hard to make Teacher x Student trope good. (づ￣ ³￣)づ
Imagine everything is just Yamato's imagination and Isshin is still in coma without any chance of waking up so he "follows his twinkling blue of the stars" by dying, and this whole manga is just his imagination before he offed himself.
On the serious note, they're so cute. Good for them. See? It's not that hard to make Teacher x Student trope good. (づ￣ ³￣)づ