This comic has its own uniqueness, namely having 2 main characters, a grandfather and his granddaughter. I thought this comic would have a market pattern like regression, but it turns out not. even the grandfather himself did not become young at the beginning of the chapter but after entering several chapters he could return to being young. usually a pattern like that has already happened in chapter 1 but this is not at all. the author's presentation is not too short which makes this different from the others. in terms of graphics it is quite good to enjoy and there are also comedy spices init. my guess is that in the future there will be a time skip where the grandfather and his granddaughter will reach adulthood who have better bodies to fight to avenge their families.