Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-5. Various Conclusions

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.

Bai Muchen had it all — not only was he the most renowned martial artist of the Nine Heaven continent, he even had the Five Meridians of Tianling and was engaged to Xuan Qingzhu, the beautiful daughter of his mentor. But everything falls apart when he’s set up by his fiancé and mentor during a cultivation session, and he is killed.

Reborn as a young man named Xiang Nan, the heir of a declining family, can Bai Muchen get his revenge?

Yun is a novice MMO player who equipped only unpopular skills labelled as garbage. However, soon after the official launch of the game, the NPC stopped to sell Recovery Potion. Everyone finally started to notice the importance of Support Magic and Items. And that spells trouble for Yun as well as all the support-based players. They received orders for recovery potion from endless flood of players en masse, some more aggressive players even go as far as forcing the support players to be their personal craftsman. In order to prevent this from going out of hands, all the support players grouped together to form a community to keep things in order.