As the next page implies, you're not really losing anything, you're going to be drowning in Wryses. He's a 3*, a 4*, and he's even one of the 1* and 2* units you can get for free! He's on par with Stahl and Felicia for most common units in t he game. Back before the 5* staff skills and the weapon refinement made dazzling double savage pain staff users possible, there was basically no reason not to cannibalize a Wrys to toss Live to Serve and Rehabilitate on to every single healer you would actually use.
I really do have to wonder what the canon explanation for what happens to heroes that are skill inheritance fodder, though.... I mean, there's no way in canon you could actually be killing them, but at the same time, they disappear... for some reason.
For The First TimeUm, if it's alright with you, could we become friends and--Skill InheritanceMr. Wrys...From now on, I will do the best of my abilities.Thank you for your kind words...Ever since I came to this world, you young ones have been so encouraging. I feel much more motivated.Excuse me!「Rehabilitate」and 「Live to Serve」! Now!It is truly an honour for an old man like me to be considered a hero.Don't say that! You're just as much of a hero as the rest of us!
