Lost One's Telltale (Gwyn's Pet Life)

With the reality crumbling because of humankind’s attempt to use magic, he was forced to remember it all, every single moment he had spent with his sister. The sin he wanted to atone to, the love he wanted to give to her, he was forced to remember anything as he reincarnated into a beast, while she’ll forget everything even if that’s a part of her wish to stay with him until the last moment. Being born again into a beast with every memories intact, a life of an assassin who had failed as a big brother, now as a pet of a Goddess, how will he fair against this new life? [Currently being edited - overhaul] Rated Mature for the usage of language and implied sexual contents. If you like the MC who’s strong from the start, then this might suit your taste. Also, a warning for those who couldn't handle angst and drama, this is not something you'd want to read. This is not a planned out story, be careful reading.