Bruh

me neither but all i understand is he's making big cash ლ(´ڡ`ლ)

Man who suffered failure & tragedy in his life, gets a chance to relive it all, with the awareness and knowledge to try and better himself & his family in his second chance. Due to past circumstances, he wants to be financially stable, and thus tries for a less demanding field. But seems like he is obsessed with money, which will lead to another downfall. Childhood bully, who becomes a friend in the next life, has an awful family situation, where his dad isn't blamed for cheating, but he and his dead mother are, leading to some strange behaviours like supposedly killing his dogs and asking about how to induce a heart attack.

a great summary, but i think Fundanshi was referring to the medical jargon, not the plot.

Sorry, my mistake

no need for apologies :)

5-HT Is a serotonin receptor in the body. Serotonin is a compound made in the body and its also considered the 'happy chemical'. A type of Anti-depressant drug is a SSRI, selective serotonin reuptake inhibitor, meaning that there is more of the 'happy hormone' available for use by the body (●'◡'●)ﾉ