Amaki, Ren

Ren Amaki is the Sword Hero, one of the four holy heroes summoned in Melromarc.

Ren comes from an Alternative Japan. In the world he lives in everything is much more advanced and futuristic. In his world, every game in the modern era is run on VRMMO.

One day while on the way home from school, Ren was caught up in a murder case. The murder case was pretty well known around the town he lived in. Ren mentioned how he remembers saving his best friend and how the criminal arrested. Ren didn't go into too much detail after that but started rubbing his side when talking, it was suspected that Ren was probably stabbed on the side of his body during the struggle then later died from blood loss.

Before he knew it he woke up he found himself summoned to another world. The world reminded him a lot of the VRMMO he played in the previous world, Brave Star Online.

Ren is a person who acts cool and tries very hard to portray a loner's image. He runs his party like a guild, only working with the other members when the prey he seeks to kill is too strong for him to hunt alone. His attitude towards his comrades is that weaker members should work to individually increase their powers to catch up to the stronger ones.

While possessed by greed, Ren becomes a bandit chief and organizes them to amass wealth, he also defeats people on the road and steals their stuff, but fortunately doesn't kill them. He becomes obsessed with increasing his power. After succumbing to Gluttony this gets much worse, and he is willing to kill people to absorb EXP from them and grow stronger. His obsession with power is however either hollow or just an attempt to escape from reality, as when asked the reason for it he can only express the purpose given to him by others: saving the world. When he is finally defeated, he reverts to a broken, but otherwise normal, Ren.

After being freed from his curses, Ren decides to learn under Eclair and try to save the world his late comrades loved so much.

(Source: The Rising of the Shield Hero Wiki)