Some seem to be dissatisfied with the MC, mentioning that the MC is weak and that he was some kind of genius mercenary. I'd have to say I completely disagree.

Mercenaries/ex-soldiers/whoever are regular people too (though most novels seem to romanticize or forget this fact completely). Just because you might be good at one thing (running missions in Afghanistan) doesn't mean if you were thrown into a completely weird situation (reborn into a drug-addict actor's body) you'd be able to suddenly become OP using your 'military experience.'

In the story, MC said he was tired of everything; the mercenary life, the killing, the missions. All he wanted to do was retire and open a coffee shop. No human can be hyper-vigilant 100% of the time or badass 24/7. His reactions and fatigue were completely reasonable.

The MC is also very competent. There's not a single situation that he didn't successfully control, minus the situations with the ML (which was explained and made sense as the ML is his weakness).

There are stories with over-the-top MCs who just dominate everything and everyone around them just act as background to make them look better. Those types of stories are also fun to read, but I am glad this is not one of those stories.

Also some mentioned that the MC was reborn into a stereotypical 'uke' body who is weak and prone to tears; this I did see as well, so they have a point!

A couple things that made me feel better about it: at least half of the male characters do also cry, ML included, and as for physical fitness, it would have really been too boring if the MC didn't end up in a newer weak body.

The new body is completely the opposite of his original body, and it's the contrast that adds interest. If the MC had been reborn into a similar body, readers would be wondering about the plot point of having him die in the first place. Much more interesting to describe how he still felt like he was a stranger after being in the new body for months and having to exercise to make himself stronger. It also made the ML's recognition of the MC's soul much more touching.

Plus, the MC was still able to trounce all the bad guys despite his 'weak' body, so I think the author did a convincing job of writing it in a way that didn't make it feel like it was done for the stereotype.

ML nearly dicks MC to death right after he was discharged from the hospital with a f*ckin gunshot wound, causing his wound to open up again, and then what? MC proceeds to go back to filming/running in the rain until he collapses??? I felt like collapsing just reading it!

the ML is obsessed with the protagonist since he was 7 years old (after getting saved by him) and considers him his God. that dependency does not change and gets even more twisted in the worst possible way, with s*xual assault. considering that, I thought he'd be the bigger issue here, but truth be told, the MC, who is 10 years older the the ML, is the worst part of all (in respect to how icky I felt). saving that kid became a major moment in his life, he even says that his ideal type stems from it: a cute, fragile person that makes you want to protect them. when he meets the ML again and guards him FOR A MONTH when they're 17 & 27, he mentioned that parting with him made him cry harder that the death of his wife and child... OK. 10 years later when they meet again, with him in a different body, is clear that his feelings have not changed. he sees the ML as a poor young boy whom only he can save. when they start having s*x, he doesn't even like it, just let's it go because the ML really looks like he needs it and he just wants to make him feel happy. he's just OK with their relationship turning s*xual just like that? despite the fact that he's been like a guardian to him thus far, one who taught him card tricks and pet his hair while he was having nightmares? he barely even knows adult ML, in his eyes he's basically the same kid... it's just SO uncomfortable. it didn't feel like love, it felt like co-dependency, obsession, and a weird sense of duty, mixed with lust.

MC didnt portrayed how he really feel towards ML. It seemed like he's just going with the flow. Although it seemed like it must be understood by the readers without explanations part, I still wanted angst. To make MC feel jealousy towards ML and other ppl.

Idk why MC denied ML's accusations of him being the past ML soul when he will be just revealing it later on. And the scene where he revealed it was when they (MC &ML) were kidnapped. He just admitted it to the villains. Idk but it was not climatic to me.

At first, there's a rift between them, as the seme feels disgusts to the original owner of the body the uke is currently occupying. But I love how his attitude took a turn as time passes and realizations pour.

The way he spoils the uke is extra cute. Hmm, sometimes his obsession with the uke is too much, and borderline psychotic (this is only my opinion lol), but that's what makes most interaction sweeter.

I must admit that I may be biased, reincarnation being a favorite genre of mine, but this is one of the best light novels I have read, and a favorite from the first chapter. The protagonist's calm and collected behavior, even in the face of adversity and annoyances is commendable, and his way of dealing with the previous owner of his body's past problems and image is splendid. The translation also reads pretty well. Even though this is a BL novel, even people who are not comfortable with this should give it a try, as, so far, it isn't used as a main part of the story, but a part of the past life used as a trial for the protagonist to overcome.