Tsunderes are okay to me as long as they don't physically hurt the MC especially if the MC is also not physically fit to receive those damages.
Ex.
Raku x Chitoge of Nisekoi is a NO for me but
Gintoki x Tsukuyo is the best!
Can someone tell me another series similar to this? Like the guy was old like him but got injured in his prime so he was made into a pack mule by his current party members. Then one night when he was drunk, he somehow pulled the hero's sword and was able to communicate with it and gave him...